That's the sort of question much better asked in the JP1 forum than here
[Link: hifi-remote.com]

To make an upgrade you normally need to find the OBC numbers for all the functions. Knowing the Protocol (Blaupunkt) and device (0) isn't enough.

Probably you can skip discovering those OBC numbers (and most of the rest of the work) by finding an upgrade someone else already built.

RM can import most KM upgrades. It probably can import the Blaupunct one from the JP1 TV folder and maybe the Grundig one. I think both those upgrades are Blaupunct protocol, device 0, but I'm not sure. Try them:
[Link: groups.yahoo.com]