realy theres a lot of codes that makes ur psp to freeze mostly when you got nitepr rev.i version. piliin mu nalang mga code 1 by 1 to knew what codes freeze u up, then put it all to a new note pad. or else use coder pr it support all codes, para di na sasakit ulo mu........ rev i kasi gamit ko ganyan din prob ko dati...,, ginawan ko nalang ng paraan.