Apple apologizes for error 53 and promises to fix it.

The bug 53 , which caused a lot of noise, turned the iPhone 6 into a brick, is still fixed by the company. Today, Apple has released a patch for OSes (iOS 9.2.1). And all users who have seen this heartbreaking message will be able to restore their phone to working condition. The error occurred with users who replaced the fingerprint scanner in a third-party repair shop.

Users left with a non-working phone got into this unpleasant situation by updating their phone to the new OS version via iTunes. The company promises that they will be able to connect a phone in an error state to iTunes and upgrade the OS to a new version. Those who made the update via iCloud should not have come across it at all. On the special page of the company's website there is a detailed instruction on how to restore the phone.
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At the same time, after updating the Touch ID fingerprint scanner will not work. This is due to the security of the authentication information stored in the device. At Apple, as always, everything was decided for the users: to allow the work of the fingerprint scanner installed by a third-party organization - this means putting the user information at risk.

Why the user himself can not make this decision for his phone, the company does not report. As a result, in order to return the functionality of the scanner, it will have to be changed in an authorized service center.

A company press release on the subject states:

Some user devices show “Connect to iTunes” after attempting to update the system. In iTunes, this status is referred to as “Error 53” and happens when the device fails the security check. This test was designed to test the correct operation of the Touch ID scanner after assembling the phone in the factory.
We apologize for the inconvenience, this process should only be carried out at the factory and should not affect the users. For users who have paid a non-warranty device replacement due to this error, please contact the AppleCare center for damages.