Problem solved, topic can be closed : ).
The problem was that for some reason "UHP" module was enabled, due to which the programming failed with "Unknown DTC" message.
(I have no UHP installed in the car).
After disabling UHP, programming was successful, though code and audio index cannot be set (Op-com does not list any options for this).
I'd like to change the code index in the future, because the HU has AUX-IN pins, and I'd like to enable this function, but it's really not essential yet.
Now, I have one more issue to resolve: this headunit does require a "vehicle speed signal" for the operation of the SatNav software.
Without this signal the HU thinks that the car is standing in the previously stored position (even though there is good GPS reception).
It's a bit crazy, because any Navi can determine the accurate position with at least 3 visible satellites, but that's it.
According to Op-com diagnostics, my car has an MK70 ABS unit, and I googled that this module outputs the required speed signal on pin 17.
I need to tap off this signal and connect it to pin 37 of the headunit and hope (fingers crossed) that the Navi will then work.
Should anyone come across similar problems with a DVD100 headunit, just PM me, and I try to help!
Happy New Year!
Best regards,
Gábor
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