The save file region mismatches your game. (e.g., You imported a European/PAL save into a USA/NTSC game folder). Fix: Check the Game ID. For PAL, the file name might be "SLES-12345" vs. USA "SLUS-12345". You cannot cross-region save without hex editing the encryption.
memory card utility rather than a physical hardware brand. It is a public domain tool used to manage virtual memory card images (.ps2) for the PCSX2 emulator. mymc memory card
By default, PCSX2 stores memory cards in the Documents\PCSX2\memcards folder. Step-by-Step Guide: Importing Saves with MyMC This is the most common use case for MyMC. Open MyMC: Run mymc-gui.exe . The save file region mismatches your game
: Downloading specific game saves with all unlocks and injecting them into your virtual memory card. mymc memory card