If you are downloading save files from the internet (e.g., GameFAQs) to unlock 100% completion, they usually come in formats like .max (Action Replay Max) or .psu (PS2 Utility).
Q: Can I use cheat codes with memory card save files? A: Yes, you can use cheat codes with memory card save files to enhance your gaming experience. memory card save file for pcsx2 ps2 better