Nav. Operating system upgrade problem
 

I'm a newbie and just picked up an e46 coupe with a DVD Nav system. I just tried to upgrade to V29.1 by downloading the .RAR file and burning the file. I burned the .mds with ImgBurn (the .mdf file would not burn) and tried to load it in my Nav DVD reader. The screen prompted a no-disc found message and eventually ejected the CD on its own (I tried loading it again with no success). I then copied the .mdf file and saved it as a .iso file type and burned it using Nero 7, someone said they tried that in another thread and seemed to work. I loaded it in my Nav DVD reader and the screen prompted a message that it was loading the CD, the screen went black and I waited about 15 minutes hoping that it was close to finishing. I waited another 5 minutes and ejected the CD myself because I thought maybe there was something wrong with the CD. Now my screen is still blank and I can only use my radio. Any advice?

Sounds like the image has been corupted somehow, and this has hung the dvd nav drive.

Use imgburn to burn a new image (using the .mds file) and burn at 1x speed.

Not sure if you have to disconnect the battery for 5 minutes first to clear the dvd fault, try inserting the new 1x speed burned image fisrt and see if it will boot the system and load the image.

could it be a problem with having a low quality cd?

could be, I use named brand cd just in case and always burn at single speed.