Hi, I've recently acquired a 3g, 4.2.1, 05.15.04 that I'd like to jailbreak and unlock. From my previous readings a while back, the only way to unlock was to upgrade the baseband to 06.15, with never being able to ever downgrade. Is this still the case or was a way developed to keep your current baseband but still unlock?? If there was a way developed, can you please guide me? Or if the only way to unlock is to upgrade to the iPad baseband (06.15), can some one please guide me with the easiest/safest directions!!?? thanks!