okay, so i was updating my iPhone to the latest update, 6.1.3 i think, and then my sister interrupted the update... now my iPhone cant turn on, i go to recovery mode and try to restore and update, but every time it downloads let's say approximately 20% the iPhone reboots ( goes to the apple logo instead of the connect to itunes logo ) and an error message appears on iTunes saying i have to enter the iPhone's passcode, and there is no way i can enter it !!! the only screen i can see is the apple logo under it an empty download line... HELP ME ! 