2004 Z4 (E85) Sat Nav

[TimboZ4]

I have just bought a 2004 BMW Z4 with the Mark IV DVD Sat Nav (Flip up screen on the dashboard). It has come with a 2005 DVD and I want to upgrade it to a newer DVD. There are plenty on offer on sites such as Eb*y but I don't know which version will be the one for me. Any help would be appreciated as BMW want £145+ for a new one.

[mmm-five]

I've replied in the other thread, so won't repeat the 'advice' here.