: Download the latest stable version (e.g., v1.1.0 or v1.2.0) from the official Open PS2 Loader GitHub uLaunchELF
The "Dev1" boot mode on a Matrix chip allows the console to automatically launch an application from the memory card upon startup. Format your USB/SD : Ensure your USB drive or SD card is formatted to (for older OPL versions) or (for newer versions to support files over 4GB). Rename the OPL file : Take the OPNPS2LD.ELF file you downloaded and rename it exactly to Create the BOOT folder : On your PS2 memory card, create a folder named Copy the file : Use uLaunchELF to copy your renamed folder on the memory card ( mc0:/BOOT/BOOT.ELF 3. Configure the Matrix Chip Settings To make the PS2 boot OPL automatically: Turn on your PS2 and immediately hold Circle + Triangle to enter the Matrix Configuration Menu. to save settings and restart. From now on, holding download file system ps2 matrix opl