Looking at the my flash disk files from avicnet2.1, the sys.txt is for the euro model. I'm going to try flipping it to the US model and then attempt to reload the bluetooth software. Will report back tomorrow...
Cool, looks like you're on the right track. As for my getting English turned on, still no luck after 3 tries. Perhaps it may have to do with how the system is restarted after copying over the MFD? There's either the physical restart button, the restart icon on the WinCE desktop, or just shutting off power. I'd think that the icon would be best at closing things down gracefully, but I'm pretty certain I've used that on at least one of my tries. I'm just not getting the expected process to choose your options on the first boot up.
-PMS