Well that's annoying... so delete everything on the device one by one?
Another question, is it possible to add Google or OSM (or any others) as a basemap on BaseCamp?
On the more advanced nuvis you can delete all favourites at once, ...
I was referring to the current range. Some of the current (and recent) 2 digit nuvis don't allow it, why I have no idea. The OP has a nuvi 50, that's one of the ones that doesn't allow you to 'delete all favourites'.
http://forums.gpsreview.net/discussion/26862/deleting-saved-addresses-from-nuvi-50lm