I'm not renaming the file. Every file that has been created has been named 109101000780.rgn. I'm using nuvi2x5W_GCDFile-MTK__780.GCD as the input file. GarminCure3.exe, Updater.exe, and the input file are all in C:\Users\Jim\Desktop\GarminCure3. I see no new files after hitting the Make Firmware button, but after I click the Updater.exe button something creates a new directory in C:\Users\Jim\Desktop\GarminCure3\GarminCure3-TEMP and writes the 109101000780.rgn file to the new directory.

Should I be renaming the .rgn file, or trying to move it to somewhere other than where Cure3/Updater is putting it? Should I be seeing a new file when I hit the Make Firmware button but before I run Updater?