The original SLPM-20018 exploit disc was used to boot the console into a state where it would accept unsigned code. (the "Swiss Army Knife" of PS2 homebrew) was the payload. If you owned the physical SLPM-20018 disc, you could use it to launch ULaunchELF from a memory card.
: This is the most famous open-source file manager and executable launcher for the PS2. It allows users to browse files on memory cards, hard drives, and USB sticks, and to launch custom .ELF programs like Open PS2 Loader (OPL) . slpm20018ulaunchelfisorar exclusive
: Some hobbyists replace the game executable on a standard commercial disc (like SLPM-20018) with uLaunchELF while keeping the original system metadata. This "trick" was historically used to bypass region locks or boot homebrew on consoles using older exploitation methods like Swap Magic . Key Functionalities The original SLPM-20018 exploit disc was used to