Are there actual firmware updates for the touch screen head unit beyond the Tom Tom updates? If yes, where are they located and do they use USB for updates?
I want to know more about this update too. If you go to the Diagnostic Assist Function in the audio unit, you will see there are 3 updates can be done, but how to do it? Anyone know?
There's a GraceNote update and TomTom NB1 update, that's all the updates there are.
GraceNote is pretty useless, something about coverart and artist/track info database.
