Is there any chance that if you hold in the Navi button for a few seconds (instead of just pressing it) that it will switch between the Navi and 2DIN functions? I still say that we need to find a way to switch between 2DIN/Navi. Or maybe try holding in the Radio button while in Navi to switch back to 2DIN? Just trying to think of some other possible ways to switch back and forth....

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