"Error 53" fury mounts as Apple software update threatens to kill your iPhone 6
It's the message that spells doom and will render your handset worthless if it's been repaired by a third party. But theres no warning and no fix.
Thousands of iPhone 6 users claim they have been left holding almost worthless phones because Apple's latest operating system permanently disables the handset if it detects that a repair has been carried out by a non-Apple technician.
Relatively few people outside the tech world are aware of the so-called "error 53" problem, but if it happens to you you'll know about it. And according to one specialist journalist, it "will kill your iPhone".