THE ERROR 53 COULD COST TO APPLE.
Be careful if you repair your iphone at other place than Apple. It can be unusable. After you have updated your phone one message can appear on its screen like "The iphone "iphone" could not be restored. An unknow error occurred (53)". Why this error(53)? The real problem is about the reparation of button home (TOUCH ID). For security reason Apple don't allow anyone to modify this button except Apple home repairer, but they don't presume a simple update can stuck all phones. How can you prevent that?
Here are some advices to avoid this error 53. First of all, don't instal the latest update. Second if you need to repair your iphone go directly to Apple home store. A law firm threw a class action and demand 5 million dollars to Apple.