This guide is for educational and archival purposes only. The use of cheat devices can alter game save data and, in rare cases, affect system stability. Additionally, distributing or downloading proprietary software (like the Codebreaker ELF files) without a license may violate copyright laws. This guide assumes you are using legitimate backups of software you own.
Typically, you'd load the game on your PS2, then use the Codebreaker device according to its instructions to input cheats. If you're working with an ISO, you might need to use a tool to mount the ISO or burn it back to a disc, depending on your setup.
Select and pick your game/cheats from the menu.