So I finally decided to jailbreak from 4.0 to 4.1 using pwnage tool and everything went fine besides the fact that my cellular service isn't working now. I followed the steps to jailbreak with pwnage tool exactly the way it told me to do it so I have no idea what I did wrong here. I'm on ATT and all it shows is one bar of signal, nothing else. Anyone know what I did wrong here?