Sorry m8. Only get code from Service Provider or specialist service. Better done with cable anyway. Not always very easy but there are ways of doing it. Plus the cable is a mini usb which is pretty easy to come bvy.
Hey to unlock v3 you need mini USB cable ( ie the cable that came with your phone ) and the software and instructions you can get from the link below. Tried and Tested 100% success rate. http://www.speedyshare.com/881211728.html