After more than three years I’ve finally updated my GPS maps. I found a blog post or other reference to GPSFileDepot which has many more and much better maps than MapCenter.

They have some really nice maps like this one from Moun10Bike which includes roads, trails, topo lines and more.

I downloaded and installed the maps and they then showed up in Garmin’s MapSource. The only tricky part was finding the ‘Make Map’ menu bar button which switched from browse mode to select-tiles-to-send-to-device mode.