I'm just getting to grips with my new Monterra. I have been struggling with several things, but have worked out most of them now. I'm still struggling with GPX files.   Initially I could not access any of the internal files/folders on the Monterra to drag/drop my GPX files, other than the DCIM pictures folder (like on a smartphone). I added a micro SD card to try loading my GPX files onto the SD instead on the Monterra itself, and now I can access both the Monterra and the SD card fully from