I have tried searching the solution to this, but I can't find anything to work. I have just upgraded my 1.1.4 phone to 2.2. I used DFU mode first, to have a clean 1.1.4 install, then used iTunes to update to 2.2 and activate it. I am on O2 in the UK. That all worked fine and I have a working 2.2 phone. I now used QuickPwn to jailbreak and unlock, followed the iClarified tutorial. Everything apparently went fine. I am jailbroken and can get into the phone from WinSCP. But the phone is not unlocked. When I put in my Tesco PAYG sim, I get the message "Different SIM Detected, please connect to iTunes." I can see from the threads that lots of people have this problem, but I haven't found any where the OP says, thanks, that fixed it. The only thing I can think might be a clue is that if I open Bootneuter on the phone, it freezes after showing the settings as 3.9, Neuter=On, FB=On, Unlock=On. Can't force-close it, I have to reboot with Home/Power. Anyone know how I get from where I am now to having both my O2 and my Tesco sim cards working? Thanks.