I have four CDs total; 2 blue and 2 black. These are from my Limited coupe which I bought used (my SRT-6 does not have NAV). The blues don't work at all so I don't know why they're there. Perhaps the previous owner damaged them somehow and the blacks were replacements.

While it's true that I couldn't get the downloaded isos to work, that could be my fault. I burned them under Linux with cd-record. I have a Windoze machine with Nero Express. I'll try that and see if it works any better.

I was able to make straight copies of my black CDs and those work OK. I'm putting the copies in the car and saving the originals.