We use Garmin 60CSx hand units loaded with a custom .img file for our project site created years ago. I need to add some POI and trail data (currently in GPX format) to the .img file, and create an updated .img file.
I did most of what I need in mapwel, but then ran into the license issue (can't create .img without a license, and I don't have a garmin unit hady I can link a license to).
I was hoping a there might be a QGIS based (or other free) solution?