Hello anyone back to the iphone world again I have forgotten a few things since I last hacktivated a 3g oops that slipped lol that I had a long time ago. Anyways I have an Iphone 4 on firmware 4.2.1 and a baseband of 3.10.01 and I want to unlock it with another carrier is there anyway to downgrade the baseband to the lowest possible to unlock it? As I said b4 I am a little out of the loop with the Iphone especially iphone 4!!! I know there used to be fuzzyband on cydia to downgrade the baseband, but this phone isn't even jailbroken it was an AT&T phone, so am wanting to unlock it and JB it if possible? I see there is a tool now called tiny umbrella to trick the itunes server i guess, but I don't really know how to use it or it's exact purpose? If anyone has any ideas or tips please let me know even if I have to completely restore it or whatever I don't mind I haven't even used it it's just charging now thnx for reading