Apple releases iOS patch to fix Error 53 bricked iPhones

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Apple releases iOS patch to fix Error 53 bricked iPhones
Apple Touch ID.

Admits error was meant to be a factory test.

Apple has released a patched version of its iOS 9.2.1 mobile operating system to restore customer iPhones that were rendered inoperable by a test intended to verify the Touch ID fingerprint authentication scanner was genuine.

The problem came to light earlier this month after customers who had had their phones repaired by shops not authorised by Apple found they stopped working, and displayed an Error 53 message.

The company today admitted Error 53 was intended as a factory security test and should not have been seen by customers.

"This test was designed to check whether Touch ID works properly before the device leaves the factory," Apple said.

"We apologise for any inconvenience, this was designed to be a factory test and was not intended to affect customers."

Apple said affected users who update their phones via iTunes should now be able to restore their devices, however the fingerprint scanner will still not work.

Touch ID, which stores fingerprints on the secure enclave co-processor on iPhones, won't be restored by the update as it would be a security risk, Apple said.

It means users who have had their phones repaired at unauthorised shops need to contact Apple to get the home button replaced, otherwise the Touch ID feature will fail to function.

Customers who have paid for out of warranty replacements of devices because of Error 53 should contact Apple Care for a reimbursement, the company said.

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