Hey there, not sure where to post this, I have a few questions..
I have an iPhone 3GS old bootrom on iOS 4.0.1 and Baseband 05.13.04 and I unlocked and had jailbroken it.
Now I would like to upgrade it to iOS 4.2.1 but without upgrading my baseband to 06.xx.xx is it possible?
will it stay unlocked if i use ultrasn0w after i jailbreak?
I'm using Windows 7..
Sorry for the trouble.. Thank you for your assistance.. :-)