n Apple software update is disabling iPhones that have been unlocked by owners who wanted to choose which mobile network to use.

Earlier this week Apple said a planned update would leave the device “permanently inoperable”.

Thousands of iPhone owners hacked their expensive gadget in order to unlock it for use with other mobile carriers and to run a host of unsupported programs.

There are also reports of the update causing issues with unaltered iPhones.

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