Hello,

I had some old version of OS in my MKIV 16:9 navigation (BMW E46 from 2003, so the version was something released around 2003).

So I've took V31 mode2-form1 image and also .NRG mode1 image. I've burned them using Nero about 4 times on Sony CD-R. They didn't seem to work and I had troubles ejecting them, but one of them eventually did, booted and some minutes later i just saw blank screen on Navi. So I turned the ignition off and back on, all I see now is old MS-DOS blue looking menu.

I figured out that this is some built-in old version safe mode of the navigation which activates if something goes wrong during the update.

So I've burned another 5 on new quality TDK CD-Rs, but using IMGBurn as many have suggested. I figured out they can't boot because the MKIV seems it's not virtually connected to navigation after the MSDOS failsafe "crash".

The red LED POWER diode on MKIV does not light up ever on MKIV. The head/laser/rotor keeps doing something like the CD is in, but nothing is inside. When I insert the CD, nothing happens, it's just reading it in continous loops.

So basically in short: used wrong CD, navigation went to MSDOS style safe mode, now MKIV reader seems it's not POWERED.

I've tried to disconnect negative terminal on the battery for 15 minutes, the settings for navigation were reset, but still no POWER in MKIV.

I have to say that exactly same thing happened to me in 530 with MKIII (went to safe mode after bad CD), but I could use a good CD then and it installed without problem, no Power LED issue.

Thank you for any help