for starfox 2
dump decrypted nand-b with hakchi 2
open it with 7z
go to usr\share\games\CLV-P-SADKE\ and extract CLV-P-SADKE.sfrom
just delete header in hexadecimal (".......0...0...0...0..........K...WUP-JU2E....") to work with snes9x
(edit: rename .sfrom to .sfc)