I just recently got an iPhone 3GS straight from AT&T, MC model, which came preinstalled with 3.1.2. I was glad, because I knew that I could jailbreak it, even though it would be tethered. I've always had perfect success jailbreaking my ipod touch 2g and 3g. I decided to use "blackra1n" for a nice easy jailbreak. Plugged it in, ran the program, and saw the lovely image of George. Everything went as expected until it reset after the jailbreak. After that, nothing I did could get out of the dreaded black screen, and after an hour of research and trial, I was forced to restore through iTunes, and was bullied into 3.1.3 The only thing I did different than my iPod was the fact that I did not sync it with iTunes before attempting the jailbreak. I got home and was excited to customize, so I never went through the "Setup as new IPhone" or "Restore from backup of Gary's iPod" Does anyone know if this is required to complete a successful jailbreak? I'm debating on taking it in and trying to get them to swap it out.