Perspective don't work after v28 upgrade

[azmp1]

Hi All,

This is my first post here, though i've been lurking around for a while reading lots of excellent posts!

We (my wife and i) currently own two Bimmers: '06 X5 3.0 - wife's and a '97 540' - mine. I do a lot of mods to my 5, but usualy not to my wife's X5 since it is leased.

So, on to the problem, yesterday, i've decided to upgrade to Nav OS v28 on the X5, downloaded from one of the posted links in the other thread, burned it, installed everything went smoothly, still in US mode, no problems what so ever. Except one. Perspective does not work.
I enable it, but after switching back to GPS, maps are still in reagular 2D overhead view, I go back to Settings, Perspective is still enabled but still no dice...

Do i need 2007.1 DVD in order for Perspective to work? The DVD i have is the original DVD that came with the car. Not sure which version, but the truck was bought in September of '05.

Can someone help please?

Thanks