Chosen Solution
The iPhone 5S gets message “iPhone’ could not be restored. an unknown error occurred -1” when trying to restore, it goes to itunes mode when trying to start. tried diffrent battery no change, tried downloading frimeware and installing in dfu mode but no change. No sign of water damage. Any idéas?
iTunes restore error -1 usually means the baseband chip needs to be removed, reballed, have jumper wires attached for points where the solder connection would be weak. Here is the solution as shown in this link: https://www.youtube.com/watch?v=wSOiCnIE… It’s fix that usually only people that do micro-soldering can do.
Error-1 is usually Baseband CPU/chip/baseband output of power supply is abnormal. Please do a restore using 3UTools and post a screenshot of where it fails like this
or better yet use the pro mode it gives more details
