for some reason my N3 is freezing and i cant get certain functions working right even after i just installed the 2008 update disk when i go to reset to default factory settings nothing happens it just takes me back to map view is there a way to do a master reset on this thing also does any one know if the n3 has an off button

Well, to reset the unit, you can, A) press the reset button - a small, recessed dot on the front of the indash unit, or, remove all power for a minute or two.