hi everyone,
about to pull hair out! ive downloaded maps from OSM and then transferred them on to my etre20 but they are not showing up in the map section. ive repeated the process a number of times and ive tried just one map at a time but the etrex 20 doesnt seem to be 'seeing' the file. any ideas??
You might have better luck posting on the OSM forum, I'm sure they would have an idea how to help you.
Are the files you downloaded IMG files or OSM files? OSM files need to be compiled with mkgmap. If you download maps from garmin.openstreetmap.nl you'll get an installer that works with BaseCamp. You need to install maps from any source to work with your E20.