Hmm... I just today loaded the navteq gps software that came with my mom's x51v (she doesn't use it) on my x5. I had it install on the sd card and also put the map on the sd card. It all seems to very easily install in one folder called "maps" in the dell gps folder on the sd card. In fact, I had put one on there then decided to remove it - i deleted all the files in the maps folder and reput a new map.
I see no problems running it from the card. I was watching my memory real close.
I had removed Pocket Map Navigator first - before installing the dell software. I'm hoping this software is better - I'm not all that happy with the PMN app.
I did have to reset my device before it would work tho.
