Cannot open Pokemon Red .sav in PKHeX

[PokeManiac Cooper]

Hi I have recently bought a generic Chinese game dumper, I was able to use the device to download my Pokemon Crystal save to my PC and edit the file using PKHeX, but when I try to download my Pokemon Red save I seem to be running into some issues. I can export the .sav file but when I try to load as a battery file while playing pokemon red in Visual Boy Advance I cannot continue the save in the start up. Using the same file I get the attached error when trying to open in PKHex. Please find attached relevant files, any help will be greatly appreciated.

Pokemon Red.sav

[Kaphotics]

Open it in a hex editor; the first thousand or so bytes appear non-random, but the rest of the file is FF.

 

Not a valid save file dump; PKHeX working as intended.