iPhone 6 Plus stuck in recovery to iTunes mode
I have a small repair store. A customer came yesterday with an iPhone 6 Plus that is stuck when turned on to the restore to itunes screen. I will add pictures shortly. They had tried to fix their own phone, putting a black aftermarket 6 Plus screen on their gold iPhone 6 Plus. I've tried unplugging the battery, putting an original cracked screen and restoring, and restoring without putting any screen on the phone. The battery doesn't look like it's been replaced, and I don't have their original screen. What could be causing this issue? Should I try testing with a new charger port? iTunes says extracting software then gives me an "error 4013" and will not restore and update the phone
Here are pictures
Is this a good question?