Hello i have a iPad air 2 4G - i have/had IOS 9.3.4 or 9.3.5 and i Updatet OTA ti IOS 10.0.2. but i got Error 56. I pluged it into iTunes and tried to update and restore in recovery mode and dfu mode. Non of theese Worked - still Got Error 56. I Have tried with different pc'es and different original cables. WHat to do??