I just want to update my maps on my nuvi I get a lot of the screen images with the desktop and a progress bar
How do I update how much does it cost
What about bike paths
The gpsfiledepot forums are primarily intended to support the topo maps on this site. Most of these maps are free and contributed by users, many of them will work on the Nuvi. But they will not give you directions, they will only show your position on the map.
If you want to update to a newer version of Garmin's City Navigator map (like the map that came with your nuvi) then I suggest you start a thread in a forum that is dedicated to using the Nuvi, such as: http://forums.gpsreview.net/categories/garmin-auto-forum-garmin-nuvi-forum