st18i unlock ok

short (make a wire connecting these 2 points) the 2 points shown in the picture in this thread or else short the 4th point to the battery ground:-

http://forum.gsmhosting.com/vbb/f473...-done-1393418/

in settings choose options 1,2 and 5. Go on PDA, choose xperia ray, press unlock. Follow the instructions give by the software.