same deal, it's pulling up the same junk.
Well, given that when you dumped the ROM and a game save couldn't be found.
Plus the content of the "save" is different from what is normally dumped from bootlegs.
As such, I have little reason to think it is fake right now.
Maybe consider opening up the cart. If it's a real cart, there should not be a battery in it (for FRLG).
Also, the innards should look like this: https://www.reddit.com/r/Gameboy/comments/ih3ctm/i_have_2_authentic_pokemon_fire_red_english/
As for the one I linked, maybe it wanted a different set of drivers or something. Given the upload date for that program is newer, may be worth a shot to do whatever it needs, as long as you kept the original drivers and program safe somewhere, in case it doesn't pan out.