Pwn20wnd has released a new replace for the Unc0ver device, which allows gadgets the usage of the A12 and A12X chips to apply Cydia with full help function (installing tweaks, jailbreak packages) after jailbreak. To jailbreak, note that delete all iOS update files via OTA if available (settings> memory management> delete downloaded updates and restart the device), if encountering the case of the device automatically reboots You just need to reopen the unc0ver and proceed to jailbreak again