For fans of classic football gaming, Pro Evolution Soccer 6 (PES 2006)
Tips and precautions:
Extract: Copy the SAVEDATA folder from your PSP/Emulator to a PC.
Step 4: Disconnect & Load Disconnect USB. Turn on your PSP. Launch PES 2006. Go to Options -> Save Data -> Load. Select the new file. Congratulations, you now have real kits.
Conclusion
On PSP: Connect via USB and go to PSP > SAVEDATA on your memory stick.
Using vintage save files on modern hardware can lead to errors. Here is how to fix them.