i just completed the upgrade. 2005 X5 4.4i

downloaded the file from megaupload
unrar the file with winrar
downloaded and installed imgburn
run imgburn and choose the "v29.mds" file in the directory where the files were unrar'ed
choose "write" in the mode menu
choose write speed: "1x"
click the rectangle button with the cd drive and arrow pointinig to the cd in the middle of the imgburn screen
cd written and completed

go to x5
open door (leave it open)
turn ignition key to position 1
go to dvd and remove map dvd
insert new v29 cd
cd is recognized by system and nav screen tells you it is loading program
nav system screen tells you it will take 6 minutes to update
screen goes black for a minute or two
a progress screen appears on nav screen and blue bar moves across until complete
tells you it is complete and to remove cd and verify "ok" (push right console button)
it tells you system will reboot..it does. (the program took only about 3 minutes to update)
i put the map cd back in the dvd drive while it was rebooting
checked the version in settings = sw 4-1/91
while in settings screen, held down menu button for 10 seconds to get to secret menu
scroll down to choices not shown on first secret menu screen
highlighted "perspective" and hit right button
turned perspective "on"

maps looks crisper and more detailed, pointer is a triangle inside a more noticeable circle. all screens on the nav are clearer and brighter.

success!