I'm on 4.0.1 iPhone 4 with jailbreak and unlock. I've heard TU preserves baseband at 1.59.00 if I run the TSS server and restore to 4.1 on iTunes. I'm just paranoid in the event of failure, I have an iPhone 4 locked to 4.1 which is useless because I'm in Europe right now. Anybody succesfully do this though and then re-unlock? I heard limera1n doesn't work with 4.1 and 1.59.00 BB. Maybe the *just released* greenpois0n does? or should I still wait for an official pwnagetool before doing this baseband preserving thing?