The title about sums it up, i bought this phone second hand off a guy and it was working but he had no deleted his stuff so i restored to 6.1.3, and it worked perfectly. So then i tried unlocking it but then i could not because, "Exploit failed" or something saying it doesn't support tethered jail breaks. Anyways so i tried down grading to 4.1.2 with Redsn0w and that failed now i'm stuck in recovery mode and Itunes detects my phone but nothing about it. I try restoring it and it finishes but then it says "Unknown error -1" or something, i have screen shots of when it happens and the error. Anyways please help i've tried restoring on 2 different computers and no luck.
Screenshots
-----------------------------------------------------------------------------
The percentage it happens at:
The error:
Screenshots
-----------------------------------------------------------------------------
The percentage it happens at:
The error: