Hi, sorry if this has been posted elsewhere, but I've listed my iPhone 3G for sale privately, and the enquiries I've had have ALL been if the phone is unlocked. I've restored to 3.1.3 firmware and was wondering if/how you can unlock the carrier on the iPhone 3G using this firmware and if anyone has any tutorials on how to do so. Appreciated. Edit: Waste of time ... I've updated to iOS 4 GM which has updated the baseband, meaning even though I'm back on 3.1.3, I can't unlock. Right?