Hi guys, just updated my firmware and navigation on my mmi 3g, I used the following link on another forum.

http://www.a5oc.com/forums/a5-genera...3473?_k=qjgisg

All working correctly and was pretty straightforward to do at no cost!! Big bonus is that it runs through the SD card now instead of the dvd drive.
Hope this is helpful for some of you.

Shak