Followed directions to the letter, TugZip, Alcohol 120%, etc. When the disc was loaded and the software uploading, the system read "error on disc, press OK to acknowledge and remove" Afterwards the Nav screen is just blank/black. 24hours no different. Reburned CD and tried, nothing happens. Today purchased new discs and reburned; no difference. Nav does not boot up when the key is turned to 1 (or 2 for that matter) and when installing the disc, nothing happens.

Is there anyway to restart the software upload or is taking the car to the dealer the only option at this point.

I have read others who have had problems and reported that they just uploaded the previous version and retried the update, but my Nav is completely non operational. I also don't have the SW 24 or 25 version.

Oh, the car is a 2003 M3.

Any help would be appreciated...

Thanks.