This simple tool will just check an SF2000 firmware/BIOS file against a list of known versions, and tell you which version it is. You can learn more about firmware revisions for the SF2000 here.
bisrv.asdSelect the bisrv.asd firmware file whose version you want to check. You can find the bisrv.asd file in the bios folder on your microSD card.
CC0: public domain. Version 1.3, 20240514.1