I'm living in London but running an American iphone 4. When I got the phone from Apple it was shipped with 4.0.2 with a 01.59.00 base band. I jail broke with Limera1n and unlocked with ultrasn0w and it's working (making calls, texts, and still being able to connect to wifi.) Except that I don't have the choice screen to change my cellular network settings, so I can't connect to O2's 3g network.