downloaded the firmware, burned to CD. turned on the key, ejected the nav disc, inserted the burned disc, nothing happened. What do you suggest I do?.

In instructions I have read it says to go to the nav menu. I can't do that as all I can get on the screen is the message to install correct cd.

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas