So I got the navigation code as you could read in another post of mine. But now, I have a different problem. The disc I have is a back up version of 2.4. It works intermittently. Like one time, I would go and turn my vehicle on and it would go into boot and the nag the screen where I press ok into the map and sometimes it just goes to the boot screen and the following screen says "Disc Read Error. (Incorrect DVD Disc)"