Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.


macrumors newbie
Original poster
Sep 22, 2016
My IP7 plus have been experiencing no service for couple days after install iOS 10.1.1. So I decided to restore it, but I can't get through restore process with an unknown error (-1) message. Any1 has any idea how to fix it. Is it hardware or software problem? I tried to search for solutions over internet but it doesn't work. Now my phone is brick at recovery mode. I have an appointment with Genius Bar but will have to wait til Tuesday. I need to use the phone. If I could solve this problem b4 Tuesday would be really great. So hope you guys could help. Thank in advance


macrumors G5
May 16, 2015
Well, other than Genius Bar, you could start a live chat and see if there is anything helpful from Apple side.
And some short search on Google shows that perhaps replacing cable would help. Or there might be a baseband hardware issue.
You can also try to download iOS 10.1.1 from other ipsw download sites and do a local restore. ITunes automatic downloading could be problematic sometimes.


macrumors 68030
Nov 27, 2007
Try another computer with a different internet connection. Make sure iTunes is up to date. Re-download a new ipsw file. Use a different lightning cord.
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.