I will be buying a 3G from a friend for a trip to europe, so it will need to be unlocked. Are all 3Gs able to be jail broken and unlocked? I read this thread: http://forums.macrumors.com/showthread.php?t=457556 I get the impression they all can be except OS 3.1.3. However, when it talks about the bootloader it says they have not all been cracked. So which is it? The phone has not been plugged into a computer since August so its not 3.1.3.