I wonder if the 4.40 firmware is what the problem really is for 06-08, which apparently converts the Nav-man unit to utilize NT maps, instead of non-NT. I think I'd be hesitant about using the already issued 4.40, till I knew for sure if that early release has a problem. Sure taking them a long time to get the "fix" released! I thought about fetching that firmware, then trying NT 2012 maps. But, gonna wait. Probably very little change in the maps, anyway.