How to update modem (cellular) firmware?
So the youtube app keeps popping up "error playbakx, press to retry" everytime i try to open and watch a video on the youtube app.
note my phone is a iPhone 5 with the latest software 8.0 and it is factory unlocked.
And i googled how to solve this problem and the answer was to update the modem firmware. So please help
iPhone 5, iOS 8