one problem with using the n800 navicore software on the n770 s the fact they sell it with a 2gb sd card and the n770 requires an MMC card. but the kit comes with all the maps and the software on a cd anyway, so loading to a different card should not be a problem. and as soon as i locate where i put the n770 i'll give it a try and let you know

buy the way, the letstalk site has the n800 kit for 199.99. tax only in certain states and free ship.

there ae no updated maps for the us yet. navicore does have a pretty good beta of a somewhat automatic updating page, though i didn't find any appreciable updates,other than two more english voices to recite directions. perhaps the maps were updated but just not for the areas i travel in.