While v2.03 is most commonly linked to ViewSonic projectors, other manufacturers also use the "M1" designation: What Is Firmware? Types And Examples - Fortinet
: Plug the USB drive into the powered-on projector. The system should automatically detect the files and prompt you with a "Firmware update" notification. Confirm and Wait . A progress bar will appear. The process usually takes 5 to 10 minutes m1 firmware update v2.03