Opey must be doing something different than the dealer. The dealer stuff is so locked out now, I would believe one can actually get more features working on their own. Example: the dealer setup does not allow express up for the windows except the drivers. Mine were all working before, and now they dont. It was explained to me that the factory has set limits on it now, more than likely due to idiots getting their heads stuck and making up lawsuits. Same goes with opening the top with the remote: cannot do that in the US. I had it done since the dealer owed me on a few things, and did this for no charge. I really need to research stuff you mentioned so I can do this sort of stuff myself.
So to put it this way Jeff, the dealer needs the radio in, but home coding using another method does not.