Hi Everyone,
I have the MKIV Navigation system with a cassette behind the 16:9 screen. Two questions; How can I upgrade the cassette to CD or DVD and how do I tell what version of the firmware I have?

Thanks in advance,
Greg

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2004 (05/04 build) X5 4.4i - Silver/Black - Premium Package, Sport PAckage, Rear Climate Package, 19" Wheels, Navigation, Park Distance Control