Hi,
My Iphone is the 3GS old bootrom original version 3.1.3 O2 UK bought on set/2009. I had unlock for the first time in 2009, since that i never update until, and I don´t f*** know why I have decide update to new 5.0.1. Said that, you must imaginate that I have backup of my precious ipsw and boobs shsh right? Wrong, I f*** don't know why i didn't backup. The problem is, the jailbreak is working fine, cydia is running propely but the unlock didn't work. Fact: I have move abroad to Brasil, my homeland. Despite this fact, the unlock program provide by ultrasnow didn't work. And I guess is because my baseband is the 05.16.05, I really don't remeber if was there or if I update in the process. I have travel for many forum and website and "learned" that the problem is my baseband 05.16.05. The solution(if we can call this solution) is update to Ipad baseband and lost the GPS function. I'm strong desagree with this "solution". So I didn't instaled this Ipad baseband and I still have my Iphone lock, but jailbreaked(I'm not sure if this expression exist!). So please how downgrade only the baseband? Actually my IOs is the 4.3.3 and the baseband is the 05.16.05, please help me!