I bought a GlobalMap 2000 two years ago, that the SOG doesn't appear to work on. When I called their customer service I was told since it is now longer in production (even though it is only two years old) the repair charge would be minimum $250.00!!!!
He did tell me some ways to clear and re-boot the unit that may do the trick - so I'm crossing my fingers.
Needless to say, if I have to send it in I'm gonna be pissed.