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what does the dvd have to do with the signal from the navi unit to the screen?
Nothing. But the DVD functions as the database for your system. If all European maps made by Alpine are in the wrong format, they won't work in your system.
Nothing. But the DVD functions as the database for your system. If all European maps made by Alpine are in the wrong format, they won't work in your system.
ya but doesn't the DVD hold the frimware too? so you might be ok.