Hi, I have a UK iPhone 3G jailbroken with Pwnage Tool that I've been using as an iPod but now want to use as a phone. The phone was previously jailbroken and unlocked on iOS 4.0 and worked fine but now even after running ultrasn0w I still get the message "No Service". How can I unlock this phone? Do I need to update the firmware? I see Pwnage Tool says I can update to an iPad baseband.