hey guys! got some newbie questions for all of you... I read all forum over and over and still couldnt find a clear answer... I have a 3G S running on 3.1.2 JB and unlocked via blackra1n... Since the guys from dev-team said all basebands are unlockable, can i just upgrade to 4.0 through iTunes and then JB using sprit/blacra1n or do I have to use a cutom IPSW already jailbroken? One last question, will 4.0 firmware change my baseband ? mine is 05.11.07 thanks you guys! Love the forum, you rock!!