NOTE: This tool will not convert save states from one emulator's format to another; it only gives you either the raw save state data the SF2000 generated (when converting from the SF2000), or allows you to take any random file and shove it into the container format the SF2000 uses for save states (when converting to the SF2000)… whether or not the SF2000 is able to understand the file you give it is up to the SF2000, not to me! If you're converting save states to the SF2000, and the SF2000 doesn't work with whatever kind of save state you provided, there's nothing I can do about that.
You can find a reference to all the specific emulators and versions used by the SF2000 here; you'll probably only have success if you're using at least the same emulator, if not also the same version. Also, to have any chance of success, you must be using the exact same ROM on both devices!
NOTE: This tool will not convert save states from one emulator's format to another; it only gives you either the raw save state data the SF2000 generated (when converting from the SF2000), or allows you to take any random file and shove it into the container format the SF2000 uses for save states (when converting to the SF2000)… whether or not the SF2000 is able to understand the file you give it is up to the SF2000, not to me! If you're converting save states to the SF2000, and the SF2000 doesn't work with whatever kind of save state you provided, there's nothing I can do about that.