My 4s updated itself to 6.1.3 and crashed during the upgrade after that I kept getting errors when I tried upgrading it again, the technicians in a cell phone store said the board had crashed and I need to flash the phone to make it work again, could some one explain in detail what flashing is and what is pageplus and metro and also is there a free way to flash the iiphone 4s
См. статью: How to flash an iphone 4s free?