DAB retro fit for cars with the cd500 and 600

[EagleForce]

I know, it's not a matter of people not willing to answer or help at all. 
Today I contacted my dealer about the VCI-code........turns out GM will charge them 150 (!) euro for the small code of software (incl VCI) which is needed for the retrofit.
I think it's madness, but who am I ;-)

So, I stop this project and sell the DAB module again ;-).

Thanks for all the help so far, will of course still follow and participate on other topics here!