| Check for hardware issues
Related errors: 1, 3, 10, 11, 12, 13, 14, 16, 20, 21, 23, 26, 27, 28, 29, 34, 35, 36, 37, 40, 1000, 1002, 1004, 1011, 1012, 1014, 1667, or 1669.
These errors mean that your device or computer may have a hardware issue that's preventing the update or restore from completing.
1.Check that your security software and settings aren't preventing your device from communicating with the Apple update server.
2.Then try to restore your iOS device two more times while connected with a cable, computer, and network you know are good.
3.Confirm that your security software and settings are allowing communication between your device and update servers.
4.If you still see the error message when you update or restore, contact Apple support.
Check for outdated or modified software
Related errors: 1015, “The required resource can't be found.”You might see these error messages if any of these are true:
•Your device has a beta version of iOS.
•You're trying to install an earlier version of iOS (downgrading).
•Your device has unauthorized modifications to iOS, also called "jailbreaking."
Use recovery mode to restore your device to the latest version of iOS. |