To run any unofficial Winning Eleven content on original PS2 hardware, your console must be modified. You have three main paths:
Knowing these details will help me give you the specific file paths and software settings you need!
Using an Network Adapter and an internal HDD with Open PS2 Loader (OPL) is the most reliable way to play patched games.
Ensure your ISO was patched correctly; check if the base game region matches the patch (NTSC-J vs PAL).
Winning Eleven—known internationally as Pro Evolution Soccer—has one of the most dedicated modding communities in gaming history. If you are looking to get the "Winning Eleven 49" add-on (often referring to a specific fan-made patch or roster update) working on your PlayStation 2, you are diving into the golden era of football simulation.
Your Option File is likely missing or corrupted on the memory card. Why Winning Eleven 49?