here's the answer to my own question:

yes it works for Mini.
I still have the English menu though, but with the dutch language installed.
the Mini logo stayed (coulden't find the Bmw logo in the bootnav either..??)

I must confess that I updated to the default V.28. earlier.
that may explain the english menu still present.
I guess it's best to change theversion number and fool the computer to make a full update.
to be continued I guess..