If you downloaded a "Better" file but nothing changed, check for these three common issues:

Paste and uncompress the file directly into your physical PS2 Memory Card ( mc0: ). Tips for Maximizing Your Fully Unlocked Game

Is using a file considered cheating? Yes and no.

Using a superior save file transforms the experience, allowing you to bypass the initial unlock phases to immediately enjoy all aspects of the game. Why You Need Better Save Data for Captain Tsubasa (PS2)