which map upgrade??

[steveshires]

Hi everyone.
I have just purchased a 2002 x5 and have the sat nav with a pretty basic view .250 yds zoom . it says v32 on the version and has a splash screen of bmw on entry it is a cd version with the television set to 16.9 and the option for split screen on the map. The actual disc in there says navteq 2002-2 . I understand this may be a silly question but which disc do i need to bring it up to date as i have looked and cant seem to find what disc to get there are so many. I have been told it is a mark 111 . What a car 4.4 ltr pure joy and gassed up .. Now time for gadgets which my wife thinks is stupid but what does she know .
thanks in advance
steve