This is one of the few times when the answer to a coding question is "yes." The nav coding instructions are at the bottom of the OS upgrade TSB. The language coding instructions are part of the car's central key coding process. See all the links.

http://www.xoutpost.com/pdf/v28.pdf
http://www.e38.org/B090398_Att1_CKMFrm.PDF
http://www.e38.org/carandkeymemory.pdf
http://www.e38.org/B090398_Att2_CKMSet.PDF

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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