Originally Posted by BMWvoid

I followed these directions and had no problems updating my nav unit.

Download file from: MEGAUPLOAD - The leading online storage and file delivery service

"Current version is 4-1/100

Updating your nav is highly recommended and easy to do.

Download the V31 or V32 image (both contain 4-1/100 Mk4 software)

Burn with a CD image buring program - I recommend ImgBurn (The Official ImgBurn Website).

Eject map CD
Turn ign on (but leave engine off)
Insert OS CD
Follow onscreen instructions - do NOT turn off ign during update process!
Remove CD when it is ejected and click OK to reboot
Voila!"