Restore System is a function to remove jailbroken devices built into the jailbreak version of Checkra1n for iOS 12.3 – 13.3, to help restore all changes that the jailbreak process has made to the file. root of the system and delete the added files later. All data stored on the device such as photos, videos, music, applications, editing files left over and installed, unaffected when performing jailbreak state removal using the Restore feature. System