How to Fix Error 53 after iOS Update or Restore - Save Your Bricked iPhone

Many iOS users have their iPhone/iPad bricked by "Error 53". If you are in the same boat, it is time to fix this problem.

If your iPhone has been bricked by "Error 53", please follow steps below:

1. Make sure that you have the latest version of iTunes.
On your computer, run iTunes, go to "Help > Check for Updates". If there is new version available, download and install it.

2. Force restart your device.
Press and hold both Home button and Sleep/Wake button for at least ten seconds until you see the Apple logo. This should only be applied when your iPhone is not responding.

photo from Apple

3. Try to restore your device again.

Apple explains that "Error 53" appears when a device fails a security test, which is designed to check whether Touch ID works properly before the device leaves the factory.

The problem usually occurs after users have their iPhone 6/6Plus screen along with Touch ID and Home button , not in Apple Store or Apple-authorized repair center, but third-party stores. When you try to update iOS or restore from backup, the software checks to make sure the Touch ID sensor matches other hardware. If it doesn't, your iPhone will stop functioning.

This solution can unbrick your iPhone and prevent non-Apple repair from bricking iPhone in the future, but the Touch ID sensor will still no longer work. You have to replace it in Apple Store or Apple-authorized repair center.

Click here to know about other Apple errors.

Source: https://support.apple.com/en-hk/ht201559#force