I have an ipad air 2 that’s stuck in restore mode. I can sync it to itunes for the update or restore method, but it will not complete install. I get different error codes: 9, 75, 4013, 4005. How can I finish the update? What is considered a good cable? I have tried 2 charging cables so far with the same result. After letting the ipad sit, it tries to reboot, but goes into restore mode.