Normally my download folder is tidy. Today I was looking for the last firmware I had before 2.03, after I upgraded and had some issues.
I am sure it was not the firmware, but I wanted to check.
I had DuetMastroFirmware.bin, DuetMastroFirmware(1).bin, DuetMastroFirmware(2).bin etc in my download folder.
I had to load each one to find out what version it was. Date and time was not an option either.
When I write code for switches, the filename is relevant for the switch, normally the switch name then date then version for that day.
ie CPLCore-210619v3.txt
First time I have rolled back to a previous version today, too many things going wrong!