If you just want to , it's easier to use .cht files or built-in cheat search (e.g., DuckStation's cheat engine). But the GameShark 5.0 ISO is useful for authentic behavior or memory card repair.
Using the GameShark 5.0 as an ISO is the standard method for modern retro gaming setups. Usage Method Gameshark 5.0 Psx Iso
Load the GameShark 5.0 ISO as "Disc 1," select codes, then use the emulator's "Change Disc" feature to swap to the game ISO. PS1 Classic If you just want to , it's easier to use