I bought an iphone 3GS that was locked to o2, I wanted to put my 3 sim in there so I jail broke the phone and that worked fine. I then realised that I needed to flash the baseband to unlock the phone. I tried jail-breaking again whilst flashing to the iPad 6:15 baseband. This seemed to work fine but when the phone starts up it won't receive a signal at all, also when I go into settings and info about the phone the baseband box is completely empty. Is there anything I can do to save my iPhone? Any help would be greatly appreciated.