It has been hard to sort out which .img file goes with which map because "D4919240A.img" is not very descriptive. I have found that I can look at the .img file in a good text editor and find the name of the map. This is from the CN NA NT 2023.10 Foursquare map:
A few things I've discovered:
- Windows Notepad cannot handle files as large as a map file.
- Notepad++ is free, and has many other uses. It's claimed that it is limited to files of 2.5Gb, but I was able to read the name of the CN NT NA map which is about 4 Gb in size. You might be limited by your system memory. https://notepad-plus-plus.org/
- Turn on Word Wrap in your editor
- My XT has no Mass Storage mode, so the Zumo has no drive letter, and I cannot load the map directly to the editor. Use File Explorer to copy the file to the PC, and then load it from there.