I have a Garmin Colorado 300 with a damaged display. Everything still works but of course I cannot see on the unit what functions I'm pressing. I want to erase all my saved locations and tracks before selling it or tossing it out. Basecamp seems to start doing it (deleting the files), but then they pop right back in when I reconnect the Colorado 300. I've tried deleting files in Finder. Same thing. It seems the files have to be deleted directly in the unit? Hope not. I cannot find a "reset" function from either Basecamp or the HTML file off the installation disc.
Help?