Chosen Solution
An old phone form my friends needed restoring as it had a passcode. Everything was working perfectly fine before except it didn’t charge, turns out there was a lot of crap in the charging port so when I cleaned it out it charged and worked perfectly When I went to restore it gets halfway through and returns error -1 i can’t seem to find any info about this erorr online does anybody have any ideas? only thing I can think of is charging port
Charging port sure sounds like a good possibility. I gave up on using iTunes error codes to diagnose problems. I would believe it if you told me that they are completely random and mean nothing. Start simple: connect a new Lightning port to the board, connect to iTunes and see if it works. Don’t worry about taking the old one out or doing anything fancy. Just plug it in. If it works, you are golden. If not, you only lost about 30 seconds.
Well, what do you know… Took it out of the housing and just had battery and charging port (no screen) didn’t work, tried with screen, didn’t work… I thought I’d give it a bath with IPA99. Didn’t ultrasonic clean or even remove IMEI shields as I can’t at the moment but what do you know it worked and the device is fully restored No visible signs of water damage
It’s a hardware problem as said before. Some have worked to heat around simcard tray with an hairblower for 4-5min
Error -1 could be caused by connection between device and pc, network and hardware problem.
