So today I traded my Black 8GB 3G flat out for a White 16GB 3GS The only problem is, this one is locked, and mine needs to be unlocked for my carrier, Cincinnati Bell. I haven't been paying attention to the 3GS jailbreak/unlock scene, because I have always had the 3G. I searched on here and was able to activate the phone and jailbreak it. I now need to unlock it. The firmware is 3.1.3, and the baseband is 5.12.01. My assumption is that it cannot be unlocked. I opened up Cydia after jailbreaking and noticed on the top of the screen it says: "This device has SHSHs on file for iPhone OS 3.1.2, 3.1.3" Does that mean that I can downgrade the frimware? What about the baseband? Thanks.