Apple Releases Updated Version of iOS 9.2.1 to Fix Devices Bricked by 'Error 53'

Apple today released an updated version of iOS 9.2.1, exclusively available to those who use Apple's latest iPhones and iPads. The second iOS 9.2.1 update comes approximately one month after iOS 9.2.1 was first released to the public.

Apple has launched the new version of iOS 9.2.1 to address the "error 53" message that some iOS users received after having their iPhones repaired by third-party services using components not sourced from the original device. These non-matching components cause the iPhone to fail a Touch ID validation check because the mismatched parts cannot properly sync.

When the Touch ID validation check failed during an iOS update or restore, Apple disabled the iPhone, effectively "bricking" it in an effort to protect Touch ID and the related Secure Enclave that stores customer fingerprint information.

Apple originally explained that error 53 was intentional, implemented as a way to prevent the use of a malicious Touch ID sensor that could be used to gain access to the Secure Enclave, but customers with bricked devices were not happy with the explanation and Apple found itself facing a class-action lawsuit.

Today's update will restore iPhones and iPads that have been disabled due to "error 53" to full working condition and it will ensure that future iPhones that have had similar repairs will not be fully disabled. Touch ID will not, however, be accessible.

Alongside the new version of iOS 9.2.1, Apple has also published a support document outlining how customers can resolve the "error 53" problem, and it has issued an apology, shared by TechCrunch.

Source for IPSW files if you don't want to wait

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