Summary of how to fix iTunes Errors when Restore / Update

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Fix iTunes Errors

Usually when an error occurs, try following the following common methods: 

Symptoms – Symptoms 
Resolution – Try the following steps (press the link Expand All Original view filters ) 
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1. Update version Latest iTunes
▪ Windows: Help> Check for Updates 
▪ Mac: iTunes> Check for Updates 

2. Confirm that the operating system has been fully updated
▪ Mac, select Software Update from Apple (  ) menu and install available updates. If an update file needs to be restarted, continue Check for update again. 
▪ Get updates on Windows PC, go to Microsoft Windows Update page. If an update file needs to be restarted, continue Check for update again. 

3. Stop connecting USB devices 
” iPhone, iPad, or iPod touch: Device not recognized in iTunes for Windows “
▪ Stop devices using USB except mouse and keyboard. 
▪ Connect USB via the main port of the computer. Restart computer and restore. 

4. Check and stop the security software
▪ Stop the third part, security software, firewall … 
▪ Check the hosts file (gs.apple.com) when encountering error 1,004 errors, 1013 , 3194 , or ” This device is not Eligible for the cầu build”. 

5. Restart computer
▪ Reboot the device. 
▪ Regarding DFU mode, instead of Recovery mode before restore, it helps to lighten the RAM and may exceed errors. Additional Information : Additional Information Below is a list of iTunes Errors that may occur during the restore / update or USB connection with iTunes (click the code to view the link) or: iTunes: Specific update and restore error messages Errors 2 , 4 , 6 , 9 , 13 , 14 , -18 , 19 , 20 ,21 , 23 , 28

2934353740-48-50100010021004101110131014,1015

147916011602160316041611163116381639

2009,3002300430133014 , 3015 , 3194 , 3200 , 9006 , 9807 , -9808 , 9844 , 4026xxxxx , Internal Error . 

Negative -98xx 
Error -9843 
iPhoneWiki : An error occurred when logging in, trying to download an app in the iTunes Store, when clicking Download without logging in to the account, this error will occur. 
TechArena : 

Error -9815 
iPhoneWiki : Revise the date, restart computer. See also Apple’s KB article . 
DailyiPhone : Revise the date, restart computer. 

Error -9814
iPhoneWiki : Revise the date, restart computer. See also Apple’s KB article . 
TechArena : 

Error -9812 
iPhoneWiki : Check computer time, restart modem router, update root certificates. See also Apple’s KB article . 
TechArena : 

Error -9808 
AppleSupport : 
▪ Follow the steps in iTunes Store: Unknown alert error message when connecting to solve the problem. 
▪ If it still doesn’t work, or if the settings return to their original values ​​after restarting, do the next iTunes for Windows: Troubleshooting security software issues . 
iPhoneWiki: Computer system time is incorrect. Need to correct. 
TechArena : 
▪ Internet connection has problems on XP and Vista. 
▪ To fix, open a web page, check SSL 3.0 and selected TLS 1.0 then go to Tools> Internet Options> Advanced remove check Security options. Check to revoke the server certificate, request a computer restart> OK. 
▪ Exit Internet Explorer, restart computer. 

Error -9800 
iPhoneWiki : Revise the date, restart computer. See also Apple’s KB article . 
DailyiPhone : Revise the date, restart computer. 

Negative -50xx 
Error -5000 
iPhoneWiki: There is a problem with the terms of the Mobile Application folder. Unable to save downloaded app from iTunes. 

Negative -32xx 
Error -3259 
iPhoneWiki : Stop Internet connection, try again. 

Error -3198 or ” This device isn’t eligible for the requested build ” 
iPhoneWiki : Error when downloading firmware, downloading again. 

Negative -20xx 
Error -2096 
TechArena : 
▪ Internet connection is problematic. WiFi network blocks or blocks access to your iTunes account, cannot activate the iPhone 
▪ Fix: Disconnect and reconnect the Internet, should connect directly. 

Negative -10xx 
Error -1202
.ITunes Store Error: Adjust the date and time for the computer. 
. Or do the following:
– Turn off iTunes if it is open. 
– Open Internet Explorer.- Click Tools> Internet Options.
– Click Advanced> Scroll down to the Security section.
– Do not choose “Check for server certificate revocation (requires restart)”
– Click Apply> OK.
– Restart computer.
see more: How to correct Error 1202 with iTunes Store in Windows 7 – JustAnswerhttp://www.justanswer.com/computer/6ehkm-correct-error-1202-itunes-store-windows.html#ixzz2BRVPEs1A
Negative -1 ~ -100
Error -54
Apple Support Communities: error -54 locks the file or permission error. (Some of the old codes still apply to OSX although there is no formal list of OSX error codes.)
First try restart computer.
iTunes Library cannot be saved (Error -54) –https://discussions.apple.com/thread/1912814
Unknown error (-54) syncing ipod –https://discussions.apple.com/thread/1082953 – The problem is locked files
Why does iTunes keep reporting errors -54 sync iPad? –https://discussions.apple.com/thread/3727114
Error -54 possibly related to Touch Copy –https://discussions.apple.com/thread/3727114 – cleared by deleting preferences on iPad.

cydiatoday: encountered this -54 error when cutting the iTunes Media folder to drive D and accidentally deleted it. 
Uninstall and reinstall iTunes, hard to recreate Music, Videos, Photos folder, see iTunes create the iTunes Media folder in drive C. 
To avoid the C drive from being full because iTunes Media will take up, go to iTunes> Edit> Preferences > Advanced: click Change … transfer iTunes Media to drive D. Then sync is normal, (default is: / Users / [host name] / Music / iTunes / iTunes Media). 
Alternatively:
It is possible to fault iTunes, go to your Music folders, Videos or Photos to delete “Cache” folders like iPhone Photo Cache … iTunes will later re-create new “Cache” folders. 
Another way:
Maybe you have deleted or lost the iTunes.plist file, you must accept the restore.
Check, go to: / var / mobile / media / itunes_control / iTunes if you see if you have files with the extension: .plist, .sidb, and some other types of tails, you don’t have to restore, if you don’t have to restore. 
To retrieve apps, you can use iFunBox, iTools, DiskAid by root path, but don’t copy the original “Applications” folder, but go to: / var / mobile / Applications, you will see these folders have been transferred random codes, copy each code carefully (do not copy the entire folder). 
If you want to copy music to: / var / mobile / Media / Itunes_Control / Music and copy the folders … 
With videos, it is difficult to solve these codes, you must copy drive D and listen to write (rename) name each video. 

Error -50 
AppleSupport: Error 13, 14, 35 and 50 (or -50)
Replace the cable; change USB port; stop PM anti-virus; discontinue PM Tuesday; firewall. 
iPhoneWiki : Remove Storm Video, QuickTime , iTunes , then install iTunes . Refer to Apple’s Knowledge Base article number TS1583 
TechArena : 
▪ Check in Edit> Preferences> Parental Control, tick. 
▪ Occurs when downloading an app purchased in the iTunes Store is disconnected. 
▪ Configuration for PM Anti-virus to receive and send Internet data of itunes.apple.com, ax.itunes.apple.com. 
▪ If problems occur when downloading videos. Delete cache download files and start downloading again after fixing. To find the downloaded cache, go to the link:
– Mac: ~ / Music / iTunes / iTunes Music / DownloadsRemarque: “~” is your directory. 
– Windows7 / Vista: / Users /] username] / Music / iTunes / iTunes Music / Downloads / 
– Windows XP: / Documents and Settings / [username] / My Documents / My Music / iTunes / iTunes Music / Downloads / 
▪ In Windows7 / Vista, the cache files have the .tmp extension. In Windows XP is .m4v.tmp. 
▪ Drag to trash these files, or press Delete. 
▪ Open iTunes / Store? Check for Software Updates. 
▪ Enter your Apple account and password, then click Search. 

Error -48 
AppleSupport: Error 48 (or -48)
Exit iTunes, delete the .ipsw file, open iTunes download and update again. 
TechArena :
▪ Update the latest iTunes. Mac: iTunes / Check for Updates. Windows: Help / Check for Updates. 
▪ Should delete the iPhone Firmware (iPAd) Software Updates. Mac: Go to ~ / Library / iTunes / iPhone (iPad) Software Updates. 
▪ Restore it. 

Error -19 
TechArena : 
▪ An error occurred while syncing. 
▪ Need to disable Sync automatically when connecting iDevices.
– Mac: iTunes / Preferences / Devices / select Prevent iPods, iPhones, and iPads from syncing automatically. Delete old backup files in: iTunes / Preferences / Devices / Device backups / select the backup file, click Delete Backup …. Delete the files in Device Support too.Remember to back up for iDevices with another computer. 
– Windows7 / Vista: iTunes / Edit / Preferences / Devices / select Prevent iPods, iPhones, and iPads from syncing automatically. Delete old backup files in: iTunes / Edit / Preferences / Devices / Device backups / select the backup file, click Delete Backup …. Delete the files in Device Support. Remember to back up for iDevices with another computer.
– Windows XP: C: / documents and settings / [yourusername] / Application Data / Apple Computer / iTunes / Delete files in “iPhone (iPad) Software Updates” and in “Device Support”. Remember to back up your iDevice with another computer. 
▪ Restore it. 

Error -35 
iPhoneWiki : Error downloading music purchased on iTunes. Refer to Apple’s Knowledge Base article number TS1475 . 

Error -18 
TechArena : About Recovery mode before restore. 

Error -4 
TechArena : 
▪ Administrator rights issue with iTunes or Apple server. 
▪ Fix: Set Administrator permissions on your computer. 
▪ Wait for connection to the AppStore server or other internet access. 

Error -1
iPhoneWiki : An error occurred when the baseband did not update the same with the iPhone’s higher firmware 4. UsingTinyUmbrella“Exit Recovery mode “.
▪ Common errors for 3GS and iPhone4 SX after week 33/2011 when jailbreak selects iPad baseband 6.15. Also known as No All Errors , lose IMEI, WiFi, 3G, Bluetooth etc. .. Cable + disc is displayed after iTunes reports an error. 
▪ There is no way to fix it. 
▪ Leave the cable + disc status to Apple if there is warranty (Apple will give up and have to change the phone) 
▪ Need to consult carefully the topic: No All Errors – Warning for 3gs week 33/2011 or later

Below 100 
Error 1 
iPhoneWiki : 
▪ Error when downgrading iPhone from iOS 5 to iOS 4.x. To solve it, create a custom firmware version by PwnageTool / S n0wbreezeor use Fix Recovery available on Notcom ‘s website . 
▪ Error when downgrading iPhone 4 from iOS 5, using TinyUmbrella options for baseband upgrade to ignore errors and return to basband 4.10.1. 
▪ Cannot downgrade. Try changing the USB port (one of the better rear ports) and restarting the computer. 
▪ The installed versions of iTunes may also be too old. Update iTunes. 
▪ You are trying to downgrade the iPhone 4 to previous iOS 5 version using Redsn0w. To resolve the selection of SHSH blob of firmware “No_BB” ipsw you are trying to downgrade 
TechArena :
▪ Recovery mode failure mode . Downgrade must return to DFU mode .
Connect the iDevice to iTunes, hold down Power + Home for 10 seconds, release the Power button and keep Home for 10 seconds until you see the message: “iTunes has detected an iPhone in recovery mode”. 
▪ The firmware error is not correct for the device type or is damaged during download, it is necessary to download the firmware of the device correctly. 

Error 2 
AppleSupport: Error 2, 4 (or -4), 6, 40, 1000, 9006
▪ Follow Troubleshooting security software . Usually the third software uninstall also solves the problem. 
▪ Maybe the third-party software changes your default packet size in Windows by inserting the TcpWindowSize entry into your registry.Reset Internet Protocol (TCP / IP). 
▪ Check that ports 80 and 443 are allowed to access the internet.
▪ Confirm security software and firewall does not block iTunes. 
▪ Remove the old .ipsw file, download the new .ipsw file from iTunes. 
▪ Restore to another network network. 
▪ Restore with another computer. 
iPhoneWiki : 
▪ ASR is not available on ramdisk or is misleading. 
▪ Sn0wbreeze creates an old version of Custom Firmware with ASR bug . Use the latest Sn0wbreeze 2.9.4 or PwnageTool version.iDevice cannot reboot. 
TechArena : 
▪ Apple server issue.
▪ Solution: Your iTunes account should only contain uppercase, lowercase letters and numbers (no other symbols should be banned from the email address such as:! # $% ^ & * () + = {} [] | \ <>?:; ” ~ `etc ..): example: BigBoss1234 . 
The uppercase letters, and numbers are accepted: 
ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890. 

Error 5 
TechArena : Firmware improper equipment, or during Download is interrupted or corrupted, it is necessary to download the firmware correctly for the device 

Error 6
An error occurred when the devices with JB Update FW iOS 6.1.3 via iTunes will meet a cable + a disc ..
Fix: Click OK, press Next Restore 6.1.3 will exit the error and go up 6.1.3. 
IPhoneWiki: Failure to downgrade to mode, change port switch cable (behind the computer better) and restart computer. 
TechArena : 
▪ USB issue. Connecting with electrical impulse problem. 
▪ Fix: Reboot and restart the computer. Replace the main port (no Hub) or another USB. You may also need to use another computer. 
▪ This error can often be fixed by following the steps described in the iTunes for Windows article: Troubleshoot problems with security software. Third party installation software. You can change your default packet size in Windows by inserting an entry in your TcpWindowSize registry. This error may be due to a default size package not in compliance. 

Error 9 
AppleSupport:
▪ Error disconnected between iTunes and iDevice while restoring. 
▪ Replace port switch cable, or find another computer. 
▪ Can also be blocked by the third part. 
iPhoneWiki : 
▪ During the ASR patch process, the SHA symbol automatically changed so after that the kernel was rejected. Therefore, you must ask for the appropriate kernel patch. If necessary kernel patches are not applied, it will suffer from ASR loading errors and error 9 will occur during the restore process. 
▪ Reboot Mac or PC can fix this error. 
TechArena : 
▪ Connection problems. 
▪ Replace USB cable to change port not through Hub. 
▪ If it still does not solve the problem, even if you tried to restore using Recovery mode or DFU mode, maybe because of hardware, need to contact Apple Store for solution or warranty. 
▪ Errors also occur when you are restoring or sync and unplugging the USB cable. Fix by changing port switch cable, stop virus software, firewall, or try another computer. 

Error 10 
iPhoneWiki : LLB not found in IPSW . iDevice cannot boot automatically. The creation of baseband update cannot work. 

Error 11 
iPhoneWiki : 
▪ Remove the BBFW file in the decompressed IPSW firmware folder. Can also be used to prevent a baseband update. iDevice is bootable, if you install auto-reboot or use TinyUmbrella “Kick Device out of Recovery”. 
▪ You are trying to update the custom firmware fromPwnageTool , always on DFU mode and restore mode . 
TError 11 hangs cable + fork when restoring or updating iOS 7.xx to iOS 8.0. especially Mac Yosemite 10.10 running iTunes 12.0 beta, some cases when restoring or updating a jailbroken device.
Fix: Edit the hosts file to Apple Server: delete the # before the last line with 74,208.10,249 gs.apple.com, Restart Computer to DFU + Restore again. 

Error 12 
iPhoneWiki : An error often occurs when restoring custom firmware. 
There is no way to fix it.

Error 13 
AppleSupport: Error 13, 14, 35 and 50 (or -50)
▪ Replace cables; change USB port; stop PM anti-virus; discontinue PM Tuesday; firewall. 
iPhoneWiki
▪ Occurs when you want to restore a beta firwmware to iTunes for Windows (blocked by Apple, the beta version is only for Mac developers). 
▪ USB problem. Check the USB connection and try other direct ports or you may need to replace the USB cable. The device is not bootable. 
▪ iTunes may also be too old. For new firmware always need the latest iTunes. Update iTunes. 

Error 14 
AppleSupport: Error 13, 14, 35 and 50 (or -50)
▪ Replace cables; change USB port; stop PM anti-virus; discontinue PM Tuesday; firewall. 
iPhoneWiki : 
▪ Update custom firmware failed (old PwnageTool version). Restore a copy of custom firmware. Update custom firmware cannot be performed. The device is not bootable.
▪ USB problem. Check the USB connection and try other direct ports or you may need to replace the USB cable. The device is not bootable. 
▪ You are trying to update the firmware beta instead of having to restore. The device is still able to boot if you choose “Kick out of recovery mode”. 
▪ Rebooting your Mac or PC can solve this problem. 
▪ Root the drive file system partitioning the size of the RAM disk. [2] 

Error 18 
iPhoneWiki : Occurs when the media library on the device fails to be replaced and updated. 
Update iTunes the latest version to restore may bypass this error. 

Error 17 
iPhoneWiki : 
▪ The device does not display Apple bootlogo. 
▪ One or more flash nand0 / nor0 is lost from the IPSW file. 
Error 17 hanged cable + when returning to DFU restore from iOS 7.xx to iOS 8.0. especially Mac Yosemite 10.10 running iTunes 12.0 beta, some cases when restoring or updating a jailbroken device.
Fix: Edit the hosts file to Apple Server: delete the # before the last line with 74,208.10,249 gs.apple.com, Restart Computer to DFU + Restore again. 

Error 19 
TechArena : 
▪ Need to disable Sync automatically when connecting iDevices. 
– Mac: iTunes / Preferences / Devices / select “Prevent iPods, iPhones, and iPads from syncing automatically”.
– Windows: iTunes / Edit / Preferences / Devices / select “Prevent iPods, iPhones, and iPads from syncing automatically ‘. 
▪ Restore again 

Error 20 
AppleSupport: Error 20, 21, 23, 26, 28, 29, 34, 37
▪ Errors can be blocked by third party software, anti-virus, firewall 
▪ Also occurs due to hardware but very rare 
iPhoneWiki : Occurs during downgrade process failed Some cases of DFU mode downgrade successfully due to mode Recovery mode .
TechArena :
▪ Error restore. 
▪ your firmware is too old or too new compared to the version of iTunes on your computer. 
▪ Fix: Download the latest version of iTunes (or earlier) .
▪ Restore it. 

Error 21 
AppleSupport: Error 20, 21, 23, 26, 28, 29, 34, 37
▪ Errors can be blocked by third part, anti-virus, firewall. 
▪ Also occurs due to hardware but very rare. 
iPhoneWiki : 
▪ Restore custom firmware wrong PwnageTool . Must be taken to DFU, not Recovery mode . 
The device hangs on the apple when it starts. Hold down power and reboot. 
▪ Error using Saurik server to restore iOS 5.x with minimum Recovery mode on A5 device. 
▪ Errors also occurred when restoring iPod to DFU mode . Use iREB ​​r5. 
TechArena :
▪ Delete old backups files in:
– Mac: iTunes / Preferences / Devices / Device backups / select backup file click “Delete Backup …” Also delete files in “Device Support”.Remember to back up for iDevices with another computer. 
– Windows7 / Vista: iTunes / Edit / Preferences / Devices / Device backups / select backup file press “Delete Backup …” Delete files in “Device Support”. Remember to back up for iDevices with another computer. 
– Windows XP: C: / documents and settings / [yourusername] / Application Data / Apple Computer / iTunes / Delete files in “iPhone (iPad) Software Updates” and in “Device Support”. 
▪ Restore it. 
▪ If still not fix, download and install the latest iTunes. 
▪ Try using USB via hub. 

Error 23 
AppleSupport:
▪ Errors can be blocked by third part, anti-virus, firewall. 
▪ Also occurs due to hardware but very rare. 
iPhoneWiki : Cannot restore or update due to hardware problem. 
▪ For software, you must set the default web browser. 
▪ About hardware, communication problems. Check all connections, also try to change the battery. 
▪ Error with baseband flash or processor. 
▪ Occasionally after a water drop. Clean and clean the motherboard. 

Error 26 
AppleSupport: Error 20, 21, 23, 26, 28, 29, 34, 37 . 
▪ Errors can be blocked by third part, anti-virus, firewall. 
▪ Also occurs due to hardware but very rare. 
iPhoneWiki :
▪ The value or variations in the RAM disk are incorrect. 
▪ Incorrect NOR flash firmware. Use the correct version of Sn0wbreeze . 

Error 27 
iPhoneWiki : Author (iPhoneWiki) encountered this error when trying to flash iOS5 from 3GS via 3G (modify restore.plist and also swap RestoreRamDisk and kernelcache)? 
TechArena : 

Error 29 
AppleSupport: Error 20, 21, 23, 26, 28, 29, 34, 37
▪ Errors can be blocked by third part, anti-virus, firewall. 
▪ Also occurs due to hardware but very rare . 
iPhoneWiki
 : Refer to Apple’s discussion thread number 2329795 regarding this issue. The battery may need to be replaced. 
TechArena : 
 Must restore. Open iRecovery (iReco very-s; setenv auto-boot true; saveenv; / exit), finish restore. 
If using Mac: System / Library / Extensions, find and delete the file “AppleMobileDevice.kext”. 
Then go to Library / Receipts / find and delete the file “AppleMobileDeviceSupport.pkg”. 
Go to System / Library / LaunchDaemons / find and delete the “com.apple.usbmuxd.plist” file. 
Go to System / Library / PrivateFrameworks to find and delete “MobileDevice.framework”. 
Wipe the “Trash” trash bin off restarting the computer. 
 Download and install the latest iTunes. 
 Restore again. 
▪ These errors may have a hardware problem with the device. Follow the steps described in this article and also try to perform a restore by connecting another computer and network that you know has restored well before to isolate device problems.
▪ If the IMEI number or MAC address is not specified or corresponds to a default value, it can also confirm that the problem is the device’s hardware. 

Error 28 
AppleSupport: Error 20, 21, 23, 26, 28, 29, 34, 37
▪ Errors can be blocked by third part, anti-virus, firewall. 
▪ Also occurs due to hardware but very rare . 
iPhoneWiki
 : 
▪ Hardware error. Return Apple if possible. The problem is that the iPhone dock connector has a problem to change.
▪ If you’ve tried almost everything, reset all settings (don’t charge the battery for five days or remove the battery for half an hour), then mount and restore. If the error persists, your flash memory / hard drive memory is corrupted. 
TechArena : 
▪ Error 28 due to the problem of restoring your device (the problem cannot be saved). 
▪ Solution: None. 
▪ Contact customer service to replace the Apple Store iPhone (if still under warranty). 
▪ These errors may have a hardware problem with the device. Follow the steps described in this article and also try to perform a restore by connecting another computer and network that you know has restored well before to isolate device problems.
▪ If the IMEI number or MAC address is not specified or corresponds to a default value, it can also confirm that the problem is the device’s hardware. 

Error 31 
iPhoneWiki : Main Article: DFU Loop : 
A DFU loop loop only occurs when you have put your device into DFU mode. Sometimes during a restore operation with scrambling operations in IPSW, iTunes will report Error 31. 
This indicates that your device is sinking in DFU mode and cannot exit even after trying to boot. again. 
This is what is called a DFU loop. The only solution is to restore the firmware. 

Error 34 
AppleSupport: Error 20, 21, 23, 26, 28, 29, 34, 37
▪ Errors can be blocked by third part, anti-virus, firewall. 
▪ Also occurs due to hardware but very rare. 
iPhoneWiki : Hard disk is full when downloading. Clean up and create space to download again. 

Error 35
AppleSupport: Error 13, 14, 35 and 50 (or -50)
Replace the cable; change USB port; stop PM anti-virus; discontinue PM Tuesday; firewall. 

Error 36
TErrors often occur for 4S and iPad2, iPad3 when updating FW for previously jailbroken machines.
1) Download FW again (possibly due to an interruption when downloading internet interruption). 
2) Update iTunes to 11.0.1. 
3) Edit the hosts file to the Apple server (C: windows system32 drivers etc). 
4) Do not run TSS server in TinyUmbrella.
5) Stop the virus PM, Firewall. Replace cable, change USB port, change computer. 
6) Backup to iCloud and Computer. About DFU Shift + Restore FW just downloaded. 

Error 37 
AppleSupport: Error 20, 21, 23, 26, 28, 29, 34, 37
▪ Errors can be blocked by third part, anti-virus, firewall. 
▪ Also occurs due to hardware but very rare. 
iPhoneWiki : 
▪ iPod touch 2G LLB patched with 0x24000 Segment Overflow used on iPhone 3GS with custom firmware. The error was found in thePwnageTool package . 
▪ Use Sn0wbreeze bug fix update. 
▪ Use Sn0wbreeze versionOld may also cause errors. Uncheck the custom bootlogos, recreate the custom IPSW . When you notifyiPhone 3GS , select “new boot-rom” uncheck all custom bootlogos, then create custom IPSW . 

Error 40 
iPhoneWiki : Hacktivation error in Sn0wbreeze 2.0.1, was fixed in Sn0wbreeze 2.0.2. 

Error 46 
iPhoneWiki 😕 

Error 48 
AppleSupport: Error 48 (or -48)
Exit iTunes, delete the .ipsw file, open iTunes download and update again. 

Error 50
AppleSupport: Error 13, 14, 35 and 50 (or -50)
▪ Replace cables; change USB port; stop PM anti-virus; discontinue PM Tuesday; firewall. 

Error 127
AppleSupport: Do the following: 
▪ Uninstall iTunes, QuickTime, Bonjour. 
▪ Restart Computer. 
▪ Install the latest iTunes again. 

Errors 10xx 
Error 1000 
AppleSupport: Error 2, 4 (or -4), 6, 40, 1000, 9006
▪ Follow Troubleshooting security software . Usually the third software uninstall also solves the problem. 
▪ Maybe the third-party software changes your default packet size in Windows by inserting the TcpWindowSize entry into your registry.Reset Internet Protocol (TCP / IP). 
▪ Check that ports 80 and 443 are allowed to access the internet.
▪ Confirm security software and firewall does not block iTunes. 
▪ Remove the old .ipsw file, download the new .ipsw file from iTunes. 
▪ Restore to another network network. 
▪ Restore with another computer. 

Error 1002 
AppleSupport: Error 1002, 1011, 1012, 1014
▪ These errors may indicate a hardware problem with your device. Follow the steps in this article. Also, try to restore the previouslyrestored computer with a good 30-pin Dock USB cable, check the cable and the internet to bypass the error. The missing MAC addressor IMEI return to default value (00 499901 064000 0) can also confirm a hardware problem. 
iPhoneWiki :
▪ Error while restoring. 
▪ About DFU mode and restore. 
TechArena : Error 1002 may have to go to the store, even if it can still be called. The problem is probably irreparable (Communication card HS?). 

Error 1004 
AppleSupport: Error 1004, 1013, 1638, 3194
▪ Install the latest iTunes. 
▪ Check security software, firewall. Certainly gs.apple.com is not blocked. 
▪ Check the hosts file for the Apple server (gs.apple.com). 
▪ Try to restore on the network and the computer is known to run well before. 
▪ If there is an error on another computer, contact AppleStore. 
iPhoneWiki : 
▪ Not suitable for Baseband Nonce currently in memory tononce back in the Baseband SHSH blob firmware . This happens if you edit the host file (Saurik of the Server) or you are using TinyUmbrella. 
▪ Use TinyUmbrella and “Kick Device Out Of Recovery” to boot. [1] 
TechArena : 

Error 1011 
AppleSupport: Error 1002, 1011, 1012, 1014
▪ These errors may indicate a hardware problem with your device. Follow the steps in this article. Also, try to restore the previouslyrestored computer with a good USB cable, check the cable and the internet to bypass the error. MAC addressmissing or IMEI return to default value (00 499901 064000 0) can also confirm a hardware problem.
iPhoneWiki : Error hanging in Recovery mode in userland of firmware. The iTunesMobileDevice.dll file is corrupted or updated.Download and fix iTunesMobileDevice.dll.TechArena :
▪ Error 1011 may have to go to the store, even if it is still heard. The problem is probably irreparable (Communication card HS?). 
▪ This 1011 errormay have a hardware problem with the device. Follow the procedures described in this article and also try to perform a restore by connecting another computer and network that you know has restored well before to isolate device problems. 
▪ If the IMEI number or MAC address is not specified or corresponds to a default value, it can also confirm that the problem is the device’s hardware. 

Error 1012 
AppleSupport: Error 1002, 1011, 1012, 1014
▪ These errors may indicate a hardware problem with your device. Follow the steps in this article. Also, try to restore the previouslyrestored computer with a good 30-pin Dock USB cable, check the cable and the internet to bypass the error. The missing MAC addressor IMEI return to default value (00 499901 064000 0) can also confirm a hardware problem. 
▪ These errors may indicate a hardware issue with your device. Follow the steps in this article. Also, when you connect with a known-good 30-pin Dock Connector cable, computer, and network to isolate this issue to the device. The MAC address is missingor the IMEI being the default value (00 499901 064000 0) can also confirm a hardware issue. 
TechArena : 
▪ This 1012 error may have a hardware problem with the device. Follow the procedures described in this article and also try to perform a restore by connecting another computer and network that you know has restored well before to isolate device problems. 
▪ If the IMEI number or MAC address is not specified or corresponds to a default value, it can also confirm that the problem is the device’s hardware. 

Error 1013 
AppleSupport: Error 1004, 1013, 1638, 3194
▪ Install the latest iTunes. 
▪ Check security software, firewall. Certainly gs.apple.com is not blocked.
▪ Check the hosts file for the Apple server (gs.apple.com). 
▪ Try to restore on the network and the computer is known to run well before. 
▪ If there is an error on another computer, contact AppleStore. 
iPhoneWiki : 
▪ iPhone 4 : It means that the baseband is not updated. Edit the hosts file to upgrade baseband or if you want to keep the baseband jailbreak to start the device. 
▪ Other iDevices: Restart computer; changing computers; Reinstall the system, if the device is still stuck in restore mode: XP can use ibus; MAC uses iNdependence. 
TechArena : 
▪ When you get the 1013 error message to open iTunes, do not click the OK button.
▪ Launch QuickPwn or Redsn0w to break the iPhone restore mode. Follow the manipulation, the software will recognize your iPhone and do “normal” mode redemmarrer 
▪ This 1013 error may indicate a hardware problem of your device. Follow the procedure described in this article and also try to perform a restore by connecting a computer and network that you know, to isolate the device problem. 
▪ If the IMEI number or MAC address is not specified or corresponds to a default value, it can also confirm that the problem is of a substance. 

Error 1014 
AppleSupport: Error 1002, 1011, 1012, 1014
▪ These errors may indicate a hardware problem with your device. Follow the steps in this article. Also, tryrestore to a previously restoredcomputer with a good 30-pin Dock USB cable, check cables and internet to bypass errors. The missing MAC address or IMEI return to default value (00 499901 064000 0) can also confirm a hardware problem. 
▪ These errors may indicate a hardware issue with your device. Follow the steps in this article. Also, when you connect with a known-good 30-pin Dock Connector cable, computer, and network to isolate this issue to the device. The MAC address is missing or the IMEI being the default value (00 499901 064000 0) can also confirm a hardware issue. 
iPhoneWiki : 
▪ Error when trying to downgrade basebandfor device. 
▪ Use TinyUmbrella and “Kick Device Out Of Recovery” to boot. [1] 

Error 1015 
iPhoneWiki : 
▪ This is a common mistake to downgrade the iPhone and iPad 3G occur when baseband higher baseband firmware restore. Just set auto-boot in iRecovery or use iREB / TinyUmbrella / RecBoot [1]. 
▪ If this is not possible, try using the Pwnage Tool to create custom firmware without using the iPad baseband , bringing the device to pwned DFU mode and retore with iTunes. 
TechArena : 
▪ A restore error many times with the firmwareDFU mode . 
▪ iDevice does not accept DFU mode (downgrade must go to DFU mode ). 
Connect iDevice to iTunes, hold down Power + Home for 10 seconds, release the Power button and keep Home for 10 seconds until you see the message: “iTunes has detected an iPhone in Recovery mode “. 
▪ An error with the Apple logo (eating Apple) cannot reboot. 
▪ Try using TinyUmbrella “Exit Recovery” or other tool like QuickPwn, iPHUC, independence, iRecovery, iBrick ..
▪ The error is also caused by upgrading from the old firmware to a new firmware but older than the current Apple firmware, it is locked.Fix by restoring the latest Apple firmware. 

Errors 13xx
Error 1394 
iPhoneWiki: When the Spirit2Pwn flash part of the boot sequence is crashed, the stick device will be in DFU mode. [1] 

Errors 14xx 
Error 1413 
iPhoneWiki : Restart computer; replace USB port; Reinstall the system. Refer to Apple’s Knowledge Base article number TS1927 . 

Error 1415 
iPhoneWiki : Restart computer; replace USB port; Reinstall the system. 

Error 1417 
iPhoneWiki : Restart computer; replace USB port; Reinstall the system. 

Error 1418 
iPhoneWiki : Restart computer; replace USB port; Reinstall the system. 

Error 1428 
iPhoneWiki : Restart computer; replace USB port; Reinstall the system. (Downgrade fromwww.iphonebus.com ). 

Error 1050 
iPhoneWiki : Problems from server gs.apple.com, need iREB to restore custom IPSW . 

Errors 16xx 
Error 1600 
iPhoneWiki : 
▪ The custom firmware cannot be restored with DFU mode because it cannot patch the device. Using jailbreak tool select pwned mode DFU mode operation . That process will patch the successful firmware version. 
▪ APTicket issue when attempting to restore IOS 5.x in DFU mode . 
▪ If stuck when restoring with iTunes, edit the hosts file will see the line “guzzoni.apple.com”. 

Error 1601 
iPhoneWiki: Refer to Apple’s Knowledge Base article number TA38633 . 
TechArena : 
▪ Problems occur during the restore process. 
▪ Uninstall and use CCleaner to remove iTunes and “Apple Mobile Device” completely. 
▪ Restart Computer before reinstalling the latest iTunes. 

Stuck in DFU mode (1601) 
Techyv.com : 
Completely uninstall iTunes and Apple Mobile Device Support, restart the computer and then reinstall the latest iTunes. Uninstall includes: 
– iTunes 
– QuickTime 
– Apple Software Update 
– Apple Mobile Device Support 
– Bonjour 
– Apple Application Support
Note that after uninstalling it may still be necessary to delete the files or folders: 
C: Program Files Cjour 
C: Program Files Common Files Apple 
: Program Files iTunes 
C: Program Files iPod 
If an error cannot be deleted iPodService.exe “Cannot delete iPodService.exe: It is used by another person or program” to delete: 
C: Program Files QuickTime 
C: Windows System32 QuickTime 
C: Windows System32 QuickTimeVR 
After you’ve uninstalled and deleted it, restart the computer and reinstall the latest iTunes. 

Error 1602 
iPhoneWiki : 
▪ Restart computer; changing computers; Reinstall the system. 
▪ If it occurs when restoring Apple TV , remove the Apple TV power cable, return to Recovery mode or DFU Mode , restore. 
TechArena : 
▪ Problems occur during the restore process. 
▪ Uninstall and use CCleaner to remove iTunes and “Apple Mobile Device” completely. 
▪ Restart Computer before reinstalling the latest iTunes. 

Error 1603 
iPhoneWiki : 
▪ Error patching kernelcache . Known on damaged packages from unofficial distribution of bundles PwnageTool . 
▪ Refer to Apple’s Knowledge Base article number TA38604 
TechArena : 
▪ Problems occurring during the restore process.
▪ Uninstall and use CCleaner to remove iTunes and “Apple Mobile Device” completely. 
▪ Restart Computer before reinstalling the latest iTunes. 

Error 1604 
iPhoneWiki : The device has not been correctly pwned (the verification is not blocked), the custom firmware cannot be restored.Sometimes it fails in the IPSW version . 
TechArena : 
▪ Problems often occur due to the device’s battery power. 
▪ Remove the socket for at least a few hours to discharge the battery. 
▪ About Recovery mode or DFU mode and try to restore. 
▪ Replace genuine new USB cable with Apple. 
▪ Stop connecting to the Hub, connect directly to the main port behind the computer. 
▪ Uninstall and use CCleanerto remove iTunes and “Apple Mobile Device” completely. 
▪ Restart Computer before reinstalling the latest iTunes. 
▪ Try using another computer and restoring it. 

Error 1611 
iPhoneWiki : 
▪ iTunes is entering Restore mode , but the device back to Recovery mode because the iOS5 update device for iPad 2 has been jailbroken before. This is simply a restore because the device is in Recovery Mode . 
▪ Error 1611 also has many hardware reasons.
▪ Error 1611Since the jailbroken machine with Tethered tool cannot boot itself at the end of the battery or shutdown. Plug and play gaming, so it is hot. It may also be due to dropping the device with a loose battery socket that damages the wave source. 
▪ Do not try to restore multiple times. 
▪ Remove the standby battery socket for about half an hour and reattach it and charge it for about 1 hour. 
▪ If the battery is low, replace it with a new battery. 
▪ If the chip of the damaged wave source must be replaced. 

Error 1618 
iPhoneWiki : 
▪ Missing system files or corrupted data when installing iTunes. 
▪ Uninstall iTunes , restart the computer, install the latest iTunes again . 
▪ This error also occurred for iTunes in Windows 8, the reason is still unknown. 

Error 1619 
iPhoneWiki :Older iTunes does not receive devices in Recovery or DFU mode . Update iTunes and do it again. 

Error 1638 
AppleSupport: Error 1004, 1013, 1638, 3194
▪ Install the latest iTunes. 
▪ Check security software, firewall. Certainly gs.apple.com is not blocked. 
▪ Check the hosts file for the Apple server (gs.apple.com). 
▪ Try to restore on the network and the computer is known to run well before. 
▪ If there is an error on another computer, contact AppleStore 

Error 1644 
iPhoneWiki : 
▪ IPSW has been moved during the preparation process with iTunes. 
▪ Best, after downloading, transfer the IPSW filego to the iPhone (iPad) Software Updates link in iTunes. 

Error 1646 
iPhoneWiki : Try on DFU mode or Recovery mode and vice versa. 

Errors 20xx 
Errors 2000 
iPhoneWiki : Error 2000, 2009
▪ If this is the case on a Mac, try disconnecting the third PM device, hubs, cables, monitor, SMC reset, and restore. 
▪ In Windows, remove all USB-connected devices, cables, except keyboard, mouse, and iDevice, restart the computer, and restore. 
▪ If it still does not fix, try changing each USB port, refer to the steps Error 1604. If the problem persists, it may be related to security software, virus, firewall …

Error 1669 
Refer to Apple Support Communities, fix error 1669 as follows: 
– Uninstall iTunes completely, find and delete all folders with iTunes. 
– Restart Computer. 
– Latest iTunes download and install. 
– Download the latest firmware for your iPad4 model. 
– Connect iPad4, go to DFU manually. 
– iTunes will tell iPad4 to be in Recovery mode, click OK. 
– Shift + Restore just downloaded firmware, click Restore. 

Error 2001 
iPhoneWiki : 
▪ Mac OS X extended operating system kernels “IOUSBFamily” developed with 2008 Late MacBook / Early 2009, as well as updated 10.5.6, there was an error not recognizing iDevice in DFU mode., can be solved by updating 10.5.7 (or later), or by using a USB hub hub. 
▪ Quit limera1n. 

Error 2002 
iPhoneWiki : iTunes cannot connect because another program is being used or disconnected during Apple’s server check. 

Error 2003 
iPhoneWiki : 
▪ Connection error; replace USB cable; check, change USB port. 
▪ Sn0wbreeze error when restoring IPSW ; unplug the cable, re-attach the iDevice and restore it. 

Error 2005 
iPhoneWiki : 
▪ Connection error; replace USB cable; check, change USB port. There may also be hardware failure. 
▪ There are cases when reinstalling USB drivers will exceed this error.

Error 2006 
iPhoneWiki : 
▪ Remove all devices with USB connection, cable connection, except keyboard, mouse, and iDevice, restart the computer, finish restoring. 
▪ Replace new cables; Change the USB port to complete the restore. 

Error 2009 
iPhoneWiki : (from Apple support ): 
▪ If you encounter this situation on a Mac, try disassembling the third PM device, hubs, cables, monitor, SMC reset, and restore. 
▪ In Windows, remove all USB-connected devices, cables, except keyboard, mouse, and iDevice, restart the computer, and restore.
▪ If it still can’t fix it, try changing each USB port, refer to the steps Error 1604. If the problem persists, it may be related to security software, virus, firewall … 

Error 2601 
. Errors often occur for Windows machines when using Redsn0w 0.9.15b1, 0.9.15b2. 
. Fix: use a newer Redsn0w version: 0.9.15b3 or use a Mac. 

Error 2624 
. Errors often occur for Windows machines when missing .dll files or Runtime errors
. Fix: follow the following link 
. Or download “RegistryQuick” at the end of the link above to fix Runtime error. 

Errors 30xx
Errors 3000-3999 (3004, 3013, 3014, 3018, 3164, 3194, and so on) 
AppleSupport : The error code in the 3000 range generally means that iTunes cannot communicate with the server (gs.apple.com) on ports 80 or 443. 
▪ Update to the latest version of iTunes. 
▪ Check the computer’s date and time accurately. 
▪ Check that the security PM or firewall cannot interfere with port 80 or 443, or with gs.apple.com server. 
▪ Follow Troubleshooting security software . Normally, removing third-party security software will resolve these errors. 
▪ A login in the hosts file can be redirected to gs.apple.com (see “Unable to contact the iOS software update server gs.apple.com”).
▪ Internet proxy settings may cause this problem. Try removing if you’re using a proxy. 
▪ Try to restore to an internet network that has been used well before. 

Error 3002 
iPhoneWiki : 
▪ Update the old firmware closed, because Apple has blocked SHSHs . of iDevice / firmware. 
▪ Or the Apple server is overloaded, restoring it later. 
▪ A common error when you Update with local TSS server ( TinyUmbrella tool ) may also be connecting to the Cydia Server . Should restore instead of update. 
▪ Error 3002 does not update the ramdisk when pressing Shift + Check for updates. 

Error 3004 
iPhoneWiki : 
▪ Do not connect to the internet during the firmware restore process. 
iTunes cannot connect to gs.apple.com. Maybe port 80 and port 443 are blocked. Check your modem and router. 

Error 3014 
iPhoneWiki : 
▪ File hosts error . “The SHSH request couldn’t be completed”. Cannot connect to Apple Server, Cydia Server or localhost TinyUmbrella .
▪ iTunes cannot connect to gs.apple.com. Maybe port 80 and port 443 are blocked. Check your modem and router.
▪ 3014 error due to restoring the updated firmware via OTA in Setings> Software Update. Fix: About DFU mode shift + restore. 

▪ Replace the USB port cable. 

Errors 31xx 
Error 3123
iPhoneWiki : Limited relevance by disc rental systems. 

Error 3191 
iPhoneWiki : QuickTime error. Reinstall iTunes will fail. With Windows, it is recommended to switch the turn-off Compatibility Mode for QuickTime. 
▪ Right-click “C: Program Files QuickTime QuickTimePlayer.exe” (“Program Files (x86)” for 64-bit Windows) and select Properties from the shortcut menu. 
▪ In Properties, click on the Compatibility tab. Select “Run this program in compatibility mode for.” 
▪ Click Apply. Exit Properties. 

Error 3194 
AppleSupport: Error 1004, 1013, 1638, 3194
The firmware restore error is lower or incorrect with Apple’s current firmware. 
▪ Install the latest iTunes.
▪ Check security software, firewall. Certainly gs.apple.com is not blocked. 
▪ Check the hosts file for the Apple server (gs.apple.com). 
▪ Try to restore on the network and the computer is known to run well before. 
▪ Use TinyUmbrella, select SHSH to restore, press “Start TSS Server”, open iTunes Shift + Restore. 
iPhoneWiki & DailyiPhone : Error when trying to restore the old firmware that was locked to Apple, if there is SHSH firmware it is possible to edit the hosts file pointing to the Cydia server of Saurik server, where SHSH files, or SHSH files are stored in the computer.Restore again.
▪ 3194 error due to restore of old firmware has been locked by Apple.
▪ Remedy: Go to “C: / Windows / system32 / drivers / etc / right-click to open” hosts’ file in Notepad. Type in the last line “74.208.10.249 gs.apple.com.” Save and exit Notepad. 
▪ Use iREB ​​or Redsn0w to return the device to pwned DFU or manually to the following: 
– Connect device 
– Hold Power + Home for 10 seconds 
– Keep Home, release Power button for another 10 seconds. 
– Open iTunes with the notification about Recovery (DFU mode), click OK 
– Shift + Restore (Mac: Alt + Restore), point to find the firmware you want to restore, click restore. 
▪ Or restore the new firmware that Apple hosts file The server has been moved to the Cydia server
▪ Cut the hosts file to another location Restore and bring it back to the original 

Error 3195 
iPhoneWiki :
▪ Do not save SHSH for firmware. 
▪ Error similar “This device isn’t eligible for the build request” 

Errors 32xx 
Error 3200 
iPhoneWiki : You try to “update” iOS5, instead of ‘restore IPSW will help lighten the Ramdisk . 

Errors 39xx 
Error 3985
Step 1:
Backup your device using iTunes or iCloud using the links below.​

Step 2: Restore your device through the link below.​

Step 3: Jailbreak Your device using the links below for iPhone, iPad and iPod running iOS 5.11 and iOS 5.0.1.​

Error 3986
▪ Error when JBU 5.1.1 with Redsn0w 0.9.12b2.
▪ Transferring to JBU Absinthe 2.0.4 will be successful.
Refer: http://www.jailbreakqa.com/questions/109227/service-wouldnt-start-3986-error-message
Remove the sim card before jailbreaking Redsn0w 0.9.14b1 to avoid activate to exit 3986 error.

Error 4005
If your iPhone is stuck in Recovery Mode, this fix should restore your iPhone to the factory settings, but a backup should have been created automatically when the OS was updated so you will have the option to restore from backup once the repair is made.

If iTunes is open, exit iTunes
Disconnect iPhone from computer USB
Click Start menu on desktop
Go to Control Panel
Go to Programs
Go to Programs and Features
Select Apple Mobile Device Support and click repair
Connect iPhone to computer USB (device should install automatically)
Open iTunes
When prompted, click restore iPhone
OS should install now and restore factory settings

iPhone will automatically restart when OS is successfully installed, and you will have the option to setup as new or restore from backup. If you wish to keep your files and settings, click restore from backup and wait until your iPhone is fully synced. If there are any discrepancies in your contacts or whatever, you will have the option to choose the correct contact to sync now or sync later. Once your iPhone is fully synced, follow the prompts on the iPhone and that’s it! Now the next step will be figuring out how to use your iPhone with the fancy new OS!

Error 4013
Symptoms
When you try to update or restore your iPhone, iPad, or iPod touch, you may see one of these messages in iTunes:

  • The iPhone [device name] could not be restored. An unknown error occurred (4005).
  • The iPhone [device name] could not be restored. An unknown error occurred (4013).
  • The iPhone [device name] could not be restored. An unknown error occurred (4014).

This may happen if the device unexpectedly disconnects during the update or restore or iTunes couldn’t tell the device to go to the restore state.

Resolution
Try these steps to resolve the issue:

  1. Install the latest version of iTunes.
  2. Restart your computer.
  3. Make sure your computer is up to date. If an update requires a restart, check for updates again after you restart.
  4. Restore using another USB cable.
  5. Restore your device on another computer.

If you continue to view errors 4005, 4013, or 4014 when you Restore Apple device or contact to support. 

Errors 90xx 
Error 9006 
AppleSupport: Error 2, 4 (or -4), 6, 40, 1000, 9006
According to Troubleshooting security software . 
Usually the third software uninstall also solves the problem. 
▪ Maybe the third-party software changes your default packet size in Windows by inserting the TcpWindowSize entry into your registry.Reset Internet Protocol (TCP / IP). 
▪ Check that ports 80 and 443 are allowed to access the internet. 
▪ Confirm security software and firewall does not block iTunes. 
▪ Remove the old .ipsw file, download the new .ipsw file from iTunes.
▪ Restore to another network network. 
▪ Restore with another computer. 

Error 9807 
AppleSupport : 
▪ Check the date and time of the computer. 
▪ If not, access the following VeriSign servers: 
– evintl-ocsp.verisign.com 
– evsecure-ocsp.verisign.com 
▪ Access to these servers may be blocked by security software, part Soft content filter, wrong router, or anti-spy software. For iTunes for Windows, follow iTunes for Windows: Troubleshooting security software issues . 

Error 9008 
iPhoneWiki : Error downloading interrupted, Downloaded again. 

Error 9844 
AppleSupport :
▪ This is often caused by inaccurate firewall settings. 
▪ See the section titled “Open ports and allow access to Apple servers” in the Advanced Steps section. 

Error 11222 
iPhoneWiki : Error using incompatible security software or blocking iTunes . 

Error 11556 
iPhoneWiki : You are trying to access a part or a function without programming for your country, for example iCloud in some countries. 

Error 
13019 iPhoneWiki : 
▪ Seems to be a problem with the media sync with the phone. It seems that only happens on machines that have been jailbroken.
▪ Create New Account User, try sync with this new library. If it fails, restore it. If possible, iTunes Library can cause an error. 
▪ In iOS 3.0 ~ 3.1.0, it is known that errors related to sync process via iTunes have been renamed to Voice Memos. 

Error 20000 
iPhoneWiki : 
▪ Error using Windows theme. Switch back to the default Theme. 
▪ Errors often occur when the “Extracting Firmware” step is reached when restoring. 

Error 20008 
iPhoneWiki : Error on Mac when using TinyUmbrella before restoring firmware Apple TV. 0xE800000F

Hex Codes iPhoneWiki : Unknown error? 

0xE8000001 
iPhoneWiki : 
▪ Sudden connection failure between iTunesand iDevice. 
▪ Repeat. 
TechArena : 
▪ If iPhone has been jailbroken and modified Mobilestation, set the right permissions 755 (System / Library / PrivateFramworks / MobileInstallation.framwork /) If you create the folder “Document” Application set chmod permissions 777. 
▪ When connected to iTunes, need to be can be related to USB, cable replacement, port exchange, USB hub removal. 
▪ If it still can’t fix it, rename the file Lockdown (C: / Apple / Lockdown) to iTunes to create a new Lockdown file, which will solve the problem. 

0xE800000A 
TechArena :
▪ Windows: Run iTunes as Administrator (right-click “Open as Administrator”). Or rename the file Lockdown (C: Documents and Settings / All Users / Application Data / Apple / and C: Documents and Settings / username / Application Data / Apple / Computer /) 
▪ Mac: an error caused by the permission issue. Open terminal.app run the sudo “mkdir / var / db / lockdown” commands and “sudo chmod 777 / var / db / lockdown”. Or use Onyx, set file permissions of Mac. 

0xE8000012 
AppleSupport 😕
▪ A new error occurred in iOS5 and iOS6 beta when restore that Apple has not supported. 
▪ Try to fix the following: 
– Click Start and open Control Panel 
– At Control Panel open Network Connections 
– Right-click on Network Connections and click Properties
– In Properties click Security and turn off Firewall 
– Go back to Start> All Programs> Windows Update 
▪ After Restart Windows full update Windows will lose error 0xE8000012
▪ Should know, must install iTunes 10.6.3.25 (latest)
Reference: 
http : //www.windowserrorhelps.com/simple-methods-to-repair-itunes-error-0xe8000012/ # more-7489

0xE8000013 
TechArena : 
▪ Activate iPhone with SIM home network for the first time with iTunes may be the cause of the error: Impossible activate iPhone U “nknown error occurred (0xE8000013). Try again later”. 
▪ An error may occur when using iTunes activate iPhone with SIM lock PIN, exit the notification. iPhone will be activated, now you can set up iPhone and sync normally.
▪ Fix the problem, open iTunes / Applications, click on one of the previously downloaded applications. iTunes will ask for permission to use the app. This is just a matter of connecting to the iTunes Store with your account. 

0xE8000022 
iPhoneWiki : 
▪ Error of firmware files. 
▪ Download and Restore. 
TechArena : 
▪ Fix: Restart computer and reboot iPhone. 
▪ If it still doesn’t work, uninstall iTunes. Restart computer. Latest iTunes reinstall. 

0xE800003D 
iPhoneWiki : 
▪ Permission errors in the Carrier Bundle folder. 
▪ Restore, update or fix permissions of Carrier Bundle update network settings via iTunes. 

0xE800006B 
iPhoneWiki: Sudden connection failure between iTunes and iDevice. Do it again. 

0xE8000025 
TechArena : 
▪ Update or install the latest iTunes (open iTunes and choose Help> Check for Updates). 
▪ If the update cannot be performed, make sure the user account contains only ASCII characters. Other characters will not correct the user’s acoount reasonably. 
▪ Make sure the user account name contains only these characters: 
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890 

0xE8000065 
iPhoneWiki : 
▪ Connection error when creating custom firmware of Sn0wbreeze . 
▪ Remove the cable, reboot the device, reattach it and continue. 
TechArena :
▪ Connect iPhone but computer does not receive. Remove the firewall. 
▪ The problem only affects Windows7 and Vista. 

0xE8008001 
iPhoneWiki : Main Article: MobileInstallation . “Signature IPA verification failed”. 

Error
This device is not possible

determine to request iPhone Wik server: Main Article: SHSH
▪ Apple locked the firmware. 
▪ Backup SHSH from TinyUmbrella . 

The (iPhone / iPod / iPad) “XXXXXX” could not be restored because of the firmware file is không tương ứng . 
iPhoneWiki : 
▪ Download the wrong firmware for iDevice (or firmware failed). 
▪ Download the firmware correctly according to the device.

Refer to firmware name and symbol for iDevices: 
Summary of download link for FW iPad, iTunes, tools Jailbreak (update 6.1 31-1-2013)
How to distinguish Model Number and Firmware download for iPhone 5 LTE / GSM / CDMA
How to distinguish Model IPad Number and Firmware 4 WiFi / GSM / Global 

The (iPhone / iPod / iPad) “XXXXXX” cannot be restored at this time because the iPhone software update server may not be contacted or is temporarily unavailable. 
iPhoneWiki : 
▪ If you upgrade or downgrade the baseband, make sure you do not change the hosts file. Cydia Server cannot handle baseband certificate requests. 
▪ Perhaps you should use SAM’s Activation method.

There was an error downloading the camera for (iPhone / iPod / iPad) “XXXXXXX” network connections have been reset, make sure your network settings are authenticated 
iPhoneWiki : Disable Anti-Virus and firewall software before updating / restoring. 

WINDOWS / MAC error with iTunes: Fix some iTunes bugs for Toperating system : ▪ Rename, transfer, or delete iOS software file (.ipsw) ▪ iTunes uses the “ipsw” file to restore the device. If the file is corrupted, it can be renamed, deleted or moved to another folder.iTunes will download the new “ipsw” file when you click restore or update. ▪

In some cases, download the “ipsw” file to save in the computer, copy to the “iPhone Software Updates” folder so that iTune finds it when you restore or update quickly and with fewer errors. The path of the “iPhone Software Updates” folder is the same as the following location. 
▪ If restore update still fails, creating a new User account will fix the problem. iTunes will download “ipsw” to the following link: 
▪ Mac OS X 
iPhone ~ / Library / iTunes / iPhone Software Updates 
iPad ~ / Library / iTunes / iPad Software Updates 
iPod touch ~ / Library / iTunes / iPod Software Updates 
Note: The tilde “~” represents your Home directory. 
▪ Windows XP 
iPhone C:
iPad C:/ Documents and Settings/ [username]/ Application Data/ Apple Computer/ iTunes/ iPad Software Updates
iPod touch C:/ Documents and Settings/ [username]/ Application Data/ Apple Computer/ iTunes/ iPod Software Updates
Note: To quickly access the Application Data folder, click Start, and then choose Run. Type %appdata% and click OK.
▪ Windows 7 and Vista
iPhone C:/ Users/ [username]/ AppData/ Roaming/ Apple Computer/ iTunes/ iPhone Software Updates
iPad C:/ Users/ [username]/ AppData/ Roaming/ Apple Computer/ iTunes/ iPad Software Updates
iPod touch C:/ Users/ [username]/ AppData/ Roaming/ Apple Computer/ iTunes/ iPod Software Updates
Note:To quickly access the AppData folder, click Start, and then in the search bar type% appdata% and press the Return key. 

Restart the Apple Mobile Device Service (Windows only)
Error when restore “Apple Mobile Device” not found: See step by step according to the operating system ( Note: Must be logged in Administrator rights) : 
▪ Windows XP 
– Exit iTunes disconnected connect the device. 
– Select Start / Control Panel. 
– In Control Panel, open Administrative Tools. 
– Open Services . 
– Select the “Apple Mobile Device” tab and click Stop the service. 
– After stopping, press Start the service.
– After the “Apple Mobile Device” service has started, open iTunes and connect the device. 
– Select the device on the left side of the iTunes window, click the Summary tab, and click Restore. 
▪ Windows XP Windows Vista and Windows 7 
– Exit iTunes to disconnect the device. 
– Click the Windows Start button below the left corner. 
– In the Start Search box, type ” Services “. 
– In the search results click ” Services “. 
– Select “Apple Mobile Device” and click Stop the service. – After stopping, press Start the service. – After the “Apple Mobile Device” service has started, open iTunes and connect the device. 

– Select the device on the left side of the iTunes window, click the Summary tab, and click Restore. 

▪ Remove, reinstall iTunes and “Apple Mobile Device Support”
After completing uninstalling iTunes and Apple Mobile Device support, Then reinstall the latest iTunes. Click the appropriate link below for your operating system. 
▪ Windows XP 
▪ Windows Vista 
▪ Mac OS X 10.6.8 and earlier 
▪ With Mac OS X 10. 7 , it is not necessary to uninstall iTunes. Just Download iTunes and reinstall. 
▪ After reinstalling iTunes, restore the device. 

iPhoneWiki : Note: 
▪ [1] UseTinyUmbrella (Kick Device out of Recovery), iRecovery or redsn0w Lite and enter “setenv auto-boot true”, “saveenv”, “reboot” to boot. 
▪ [2] Device isn’t bootable, but a firmware custom can được phục hồi nếu nó có jailbreak và các requirements. 

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