After updating to ver 28 it will read 4-1/80.

I was stuck regarding this step as well. Funny how one little detail can make all the difference. Installed V27 successfully. Didn't see the need for V28 as the BMW Instructions say there is nothing new in this version for X5.

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….

I did it last night and it worked like a charm. I used "Winace" to decompress the files and "Alcohol 120%" to write it to a CD. I already have the Nav. DVD 2006.2 but I will probably try to download and update to 2007.1. The street that my new house is being built on is not on 2006.2 even though the street has been there about a year and a half. Hopefully 2007.1 has it on there.