Anyone ran into a problem when after the upgrade to latest maps, version 13 (North American maps) the NTG4.0 unit can't start and goes into a loop of rebooting every 20 or so seconds.
There's no radio, no nav, no nothing and it doesn't respond to any button pressing. Of course I'd try to downgrade it to the older maps back but how would I do it ?
The system is bricked ?
It's a standard issue. You have old firmware version in your Comand (Telematics). Comand lets install new maps but it's incompatible with old Telematics. The only way to fix I know is put HDD from another Comand with old maps, update Telematics, switch HDD and install new maps. I've got "old" HDD for EU version but I think there is no matter.
That's what I also thought and figured. Trying to find an "old" HDD and looking into way to take the head the unit out of panel.
Looks straightforward based on the youtube video https://www.youtube.com/watch?v=Dxjs7Wc3TZM