I have been trying to do my research on this but it would be nice if someone can tell me if I'm looking at this correctly. Problem : My navigation unit in the trunk has gone bad. I had it swapped out with another unit from another car and everything started to work correctly. So... I have a 2000 740 i sport and based on what I have read, I seem to have an MK2 unit. This would be the unit with the sqware edges on the bezel. It looks like I can upgrade to an MK3 unit the one with the rounded edges on the bezel and it will work with the 4:3 screen on the dash. Then later down the road I should be able to upgrade the unit on the dash with the bigger screen. This is how I see things and I think I'm correct but it would be nice if someone can validate my thinking. I also understand that if I upgrade to the MK3 unit, then I get faster results from the naivigation system. The lag time drops. There also seems to be a split screen feature I will get but I'm not sure if that is part of the MK3 or if that is something with the wide screen console in the dash.
Thanks
David.