To update your game with modern or classic kits, you generally rely on specific modding software:
This is the easiest way for modders. It uses the "GDB" (Graphic Database) folder. Pes 6 Kits
Furthermore, "Hybrid Patches" now allow PES 6 to read kits in .ftex format directly (a modern file format), increasing load speeds and reducing the memory overflow that caused the famous "black kit bug" on older PCs. To update your game with modern or classic