Hi Everyone, I'm new to this forum, and in need of some help. I have a 4S, which was jailbroken on iOS 8.1.2, and which has served me well up until now. I made the mistake of erasing all content and settings, which froze it up and made it unable to load. I have tried numerous times, on 3 different macs to restore it, both in recovery mode and the black screen DFU mode. Every time, at the very end, with the progress bar on the phone just a hair from full, it stops and says unable to restore for unknown reason. Error 48. This happens on when iTunes says it is installing the firmware. I searched error 48, and nothing came up but an older, outdated error [error (-48)]saying to delete the .ipsw and reinstall. I skeptically tried it out of desperation, but to no avail. I don't know what else I can try. Any help or advice will be very much appreciated.