Actually you can resolve this. On the radio there is a "M" button. If you turn the car on (don't touch any other buttons). Hold the M down for a few seconds and you will eventually get another hidden menu on the screen. Then use the + or - signs navigate to where it says USA then use the number buttons to select Europe. Turn the radio off and back on. It should be good to go.

As for NAV coder, it let's you change the region and voices as well. Most people just hack the software.

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Will