I have a Zumo XT and MacBook Air (both less than 1 year old). The MacBook Air is running Big Sur and all software is up-to-date. While it takes nearly 5 minutes for the MacBook to recognize the Zumo XT while running BaseCamp - it does work. Garmin Express recognizes the unit much faster. BUT - the MacBook Finder never shows the device as a connected folder, like a USB stick. Doing some Googling, I learned that this was the ONLY way to actually delete old GPX content from your Zumo XT: open it in Finder, open the "GPX" folder and delete the content.
This is useless if Finder won't see the Zumo.
What am I doing wrong? I have room left on my Zumo XT, but I don't like having old files hanging around. Any ideas?