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01-02-2001, 03:55 PM

Mr. Grinch
01-02-2001, 04:16 PM and<p>Basically, there are a few different nav units. And there are a few versions of the same unit but with different firmware/software. The most common complaint I've seen is that the nav system is slow, but a later firmware/software upgrade supposedly improved this somewhat. People were having a hard time trying to locate this upgrade... of course the dealers knew nothing about it. <p>Check out those forums and do a search. You could also check out the e39 m5 forum on<br>

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