I have not seen it in person, but I am 90% sure that is a CCC MOST system similar to the new 6 Series, 3 Series, new X5, etc. If that is correct, then only a dealer can update it.

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SOLD
2000 E38 750iL Highline Edition, Upgraded with the lastest 2006 X5 Electronics
MKIV Navigation, 16:9 Display, Bluetooth, TV/Video with Backup Camera, Sirius, and Aux Input