A couple of weeks ago, iPhone users began reporting issues with a mysterious ‘Error 53’, a message that would render their iPhone useless. As it turned out, Error 53 was caused when third party repair shops replaced, or repaired the TouchID sensor.

We protect fingerprint data using a protected enclave, which is uniquely matched to the touch ID sensor. At the point when iPhone is serviced by an approved Apple service provider or Apple retail store for changes that affect the touch ID sensor, the pairing is re-validated. This check guarantees the gadget and the iOS features related with touch ID stay secure. Without this unique pairing, a malicious touch ID sensor could be substituted, subsequently accessing the safe enclave. At the point when iOS identifies that the pairing fails, touch ID, including Apple Pay, is disabled so the gadget stays secure.

Apple has released an update that will allow users that have received the error to restore their gadget through iTunes. Note that this update won’t re-enable TouchID.

Apple’s official statement to TechCrunch said the following:

A few clients’ gadgets are appearing ‘Connect to iTunes’ after attempting an iOS update or a restore from iTunes on a Mac or PC. This reports as an Error 53 in iTunes and shows up when a gadget fails a security test. This test was intended to check whether Touch ID works properly before the gadget leaves the factory.

Today, Apple released a software update that allows clients who have experienced this error message to effectively restore their gadget using iTunes on a Mac or PC.

We apologize for any inconvenience, this was intended to be a factory test and was not planned to affect clients. Clients who paid for an out-of-guarantee replacement of their device based on this issue should contact AppleCare about a reimbursement.

Apple has also posted a support page for people that have gotten the error. It lists the steps to follow to fix Error 53. If that doesn’t work, it recommends getting Apple Support to discover the pricing for out-of-guarantee repair, expecting that the gadget was repaired by a third party.

Note that if you’re affected by this and TouchID is important to you, you can have Apple replace your TouchID sensor with an out-of-warranty repair. If the feature isn’t that critical to you, at least now you can have it replaced by a third party without the risk of bricking your telephone.


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