As for difference. It upgrade Windows CE from 6.0 to 6.1.7.0, updates maps and updates software as well. Sorry it took so long for me to reply back but the wife caught me outside playing and forced me to go to the casino with her.. =-)
So oh yea in case you didn't read an earlier post, yes the testmode works..
I am noticing faster boot times on my unit but since I am a new owner of the F90BT I really didn't experience any dreadfully long boot times before.
Chuck