Fix 9, 4005, 4013, 4014 errors when restoring iPhone

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According Steve Jobs, most of Apple products certainly will not encounter any problems during operation process. Although Apple products own a stable operating system, users can still have to face with some issues relating to both software and hardware. The simplest solution is restoring your iPhone to the factory settings.

This article will help users fix some basic errors when restoring iPhone.


9, 4005, 4013, 4014 Error when restoring iPhone

While restoring or installing updates your iPhone through iTunes, some errors can occur. Meanwhile, a notification will appear on your desktop screen:

 “The iPhone [device name] could not be restored. An unknown error occurred [error number]”

Depending on each error “Error number”, we can find any different solutions.


The most popular errors on iPhone are 9, 4005, 4013 and 4014. These are classified as serious errors that can affect the results of the updating or restoring process. The following steps can help you solve problems with the corresponding error message.

How to Fix


  1. Use a lightning cable or switch to a different USB port

The problems may sometimes come from the connection of your device to the computer. You should use a standard Lightning Apple cable to continue the restore process or check the USB port connection again. Make sure there is no interruption during restore process.

  1. Restart your iPhone

If the method above fails, try rebooting your iPhone. You can restart by pressing and holding simultaneously two the Power (Sleep) and Home button until Apple logo appears. When your iPhone completely reboots, unlock your device then try to restore or update through iTunes once again.

  1. Update iTunes or reinstall iTunes

Perhaps the iTunes is too old. Try updating to the latest version of iTunes. If it fails, you should remove then reinstall the iTunes form the homepage of Apple.


If the above steps do not help you fix the problem, you should contact the Apple Support Service centers for more information

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