Apple has released an upgraded form of iOS 9.2.1 through iTunes to settle an issue that could block iPhones or iPads adjusted by unapproved repair shops. The Guardian initially saw the issue that was brought about by substitution of the Touch ID Home catch by an unapproved specialist.

Apple depicts what clients might experience:

After you attempt to upgrade or restore your iOS gadget in iTunes on your Mac or PC, you may see mistake 53 in iTunes and “Interface with iTunes” on your gadget. Blunder 53 shows up when a gadget fizzles a security test. This test was intended to check whether Touch ID works legitimately before the gadget leaves the production line, and wasn’t planned to influence clients.

For any individual who experienced mistake 53, Apple has discharged an overhaul to iOS 9.2.1 to permit you to effectively restore your gadget utilizing iTunes on your Mac or PC. Utilize the progressions in this article to restore and recuperate your gadget. On the off chance that you trust that you paid for an out-of-guarantee gadget substitution taking into account a mistake 53 issue, you can contact Apple Support to get some information about repayment.

What you should do:
1. If iTunes is open on your Mac or PC, quit iTunes.
2. If your iOS device is plugged into your computer, unplug it.
3. Make sure that you have the latest version of iTunes.
4. Connect your iOS device to your computer with a USB cable.
5. Open iTunes and select your device.
6. When you see the option in iTunes to Restore or Update, click Restore.*
7. When you see your iOS device’s Hello screen, follow the onscreen steps to set up your device.
● If you previously backed up your device, you can set up from your backup.
● When you see the screen for Touch ID, tap Set up Touch ID later.
8. If Touch ID on your device didn’t work before you saw error 53, the feature still won’t work after you restore your device. Contact Apple Support to ask about service options for Touch ID.

You can download the new version of iOS 9.2.1 from here:
iPhone Firmware Download Links
iPad Firmware Download Links