I recently decided it was time to update the maps on my 745i, which led me to thinking about updating the firmware on the computer as well, and here's where all the problems start. Looking at my VIN number, it's a 2002 made in Germany. I have the 16x9 screen, just like in this picture. I can't tell whether I have a MKIII or MKIV system. I popped open the trunk of the car, and looked at the navigation system, but it didn't resemble any of the ones on the faq. It didn't say CD or DVD either, so I have no idea which it could be. Also, when I go to the settings, it doesn't give me the code as described in the faq - I'm completely stumped. How can I tell? Also, which firmware should I get? I tried burning the v32 iso onto a CD and putting it into the disc drive, but it just spit it back out after a few seconds.