If you cannot find a working GameShark ISO, you have modern alternatives that are safer and more powerful.
This "swap trick" made the Gameshark a piece of physical hardware and software combined. Over time, updated versions (Gameshark 2, Gameshark 2 Version 2) improved code storage and compatibility. Gameshark Ps2 Rom
The real utility of the Gameshark PS2 ROM today is for (specifically FreeMcBoot users). The Gameshark software has a feature that allows you to boot ELF files (homebrew applications). For people soft-modding their physical PS2s, the Gameshark was historically a "gateway" to installing memory card exploits. If you are a tinkerer, this ROM has functional value beyond cheating. If you cannot find a working GameShark ISO,
: Boot the ISO and use the GameShark menu to pick your game and cheats. The real utility of the Gameshark PS2 ROM
You do not need a special GameShark ROM to cheat. You need the and a way to input them into your emulator.
Whether you’re looking to breeze through a childhood favorite or experiment with game mechanics, using GameShark-style cheats with PS2 ROMs is a great way to breathe new life into classic titles. It’s about playing the game game title you're playing, and I can help you find the right setup!