ultrasn0w screws up my 3GS! Help!
So I successfully jailbroke my 3GS using redsn0w without a hitch. However, everytime I go to unlock with ultrasn0w I run into a big problem.
After I install ultrasn0w from Cydia it prompts me to restart the device, which I do, but the problem is the device won't restart. I see the grey Apple logo for about 10 seconds and then nothing. Black screen. I tried a hard restart, I tried everything. The only thing I could do is restore the phone and jailbreak again. I've tried this four or five times and still no luck. Anybody heard of this problem or have a solution? Thanks in advance!