My iPhone 3GS was stuck at the Apple logo today, leaving me no choice but to restore. I tried restoring back to 3.1.2, but iTunes gave me an error saying that the iPhone is not eligible for that requested build. Is it possible for me to upgrade to 3.1.3 then rejailbreak? Sn0wbreeze says it'll jailbreak 3GS at 3.1.3 with the old bootrom and non-MC. I got my 3GS around when it came out. Does upgrading bring me to a new bootrom? Any help would be greatly appreciated! Thanks!