The iPhone could not be restored. An unknown error occurred. This was the notification I got from iTunes when I updated my iPhone 6s from iOS 10.3.2 to iOS 12 on iTunes. I have deleted and reinstalled iTunes, tried different USB lightning cables, connected to Wi-Fi network, etc. but none of these methods is able to make my iPhone work again. Please, how can I solve it? – Philly2121

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If you would like to fix “iPhone could not be restored” easily and quickly, take advantages of iMyFone TunesFix iTunes repair expert. It provides the ultimate solution to repair iTunes any errors and improves iTunes and PC performance.

So, if you need a quick and easy solution to solving this iTunes error, then download and install iMyFone TunesFix in your PC, and use it without hassle.

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Key Features:

  • Fix “iPhone could not be restored” error 9, 4005, 4013, 4014 and other errors like that.
  • Also fix other iTunes issues: components related problems, iTunes won’t start/install/update/connect/restore/back up and 10+ more kinds of issues.
  • Why choose: one-click feature, no data loss, fast and safe to run, etc.
  • Completely remove components from a previous/damaged iTunes installation, leaving no harmful fragments.
  • Preview and clean iTunes data or junk files selectively in bulk or all at once.

Windows version    Mac version

1. How to Easily Repair “iPhone Could Not be Restored”

Step 1: Simply download, install and launch iMyFone TunesFix on your PC. It will detect the specific status of your iTunes.

Step 2: When you are in the home interface, choose “Fix Other iTunes Problems”.

iMyFone TunesFix screenshot

Step 3: Click “Repair” to start the process. It will install the driver to repair your iTunes. Once done, try to restore your iPhone on iTunes again. It would work.

iMyFone TunesFix screenshot

2. Try Regular Solutions for "iPhone Could Not be Restored"

If you’re using a Windows computer while experiencing the above error, then you can follow any of the following solutions to restore your iPhone.

1 Update Computer and iTunes

You can check if your windows operating system is up to date by clicking:

  • Step 1: Start button > Search option > type Update in the search box.
  • Step 2: Click Windows Update.

Also, you can check if your iTunes software needs to be updated by:

  • Step 1: Run iTunes on your Windows PC, then click “Help > Check Update”.
  • Step 2: Update iTunes to its latest version.
iTunes update

2 Check the USB Connection

Check to see if your iPhone USB cable is the problem why iTunes cannot restore iPhone. Use another USB cable or try another USB port.

3 Reset All iPhone Settings

  • Step 1: Restart your iPhone.
  • Step 2: Go to Settings and click “General > Reset > Reset All Settings”.
Reset all settings

4 Clean iPhone Space

The ‘iPhone could not be restored” errors may have occurred due to lack of iPhone storage space to accommodate new update. You can manually delete some unwanted files from iPhone, like photos, videos, music, apps, etc. Or you can take advantages of iMyFone Umate Pro iPhone Cleaner to safely release huge space on iPhone without hassle.

5 Put iPhone into DFU Mode and Restore

  • Step 1: Connect your iPhone to your computer and launch iTunes.
  • Step 2: Press and hold the Sleep/Wake and the Home buttons simultaneously for 10 seconds, then leave the Sleep/Wake button but keep holding the Home button until iTunes says “iTunes has detected an iPhone in recovery mode.
  • Step 3: Release the Home button. At this point, your iPhone screen should be completely black.
  • Step 4: Restore your iPhone with iTunes.

If you don’t like to bear iTunes, you can also try the alternative way to restore your iPhone to factory default settings.

The Causes for “iPhone Could Not be Restored" Error

“iPhone could not be restored” errors is a common error that is usually encountered when updating or restoring an iPhone on iTunes. However, no one could be able to say that “this is the particular cause of iPhone could not be updated or restored errors”.

There are several possible reasons why iTunes may be displaying “iPhone could not be restored” error, but we shall be listing 4 most common causes:

  1. Unauthorized modification of iOS which has led to security vulnerabilities, instabilities, and other issues.
  2. Your iPhone may have been jailbroken in the past. This may be the reason why iTunes cannot install the right firmware on your iPhone.
  3. iTunes malfunctions can be the major cause of “iPhone could not be restored” error, and fixing iTunes is the best-known way to solve this issue.
  4. Other reasons such as fake iPhone USB, outdated iTunes or Windows software drivers, wrong settings, etc.