Framework .NET required.
Tested on pes2013.exe V1.03 and V1.04.

1. Make a backup before.
2. Open pes2013.exe
3. Select a league from available leagues combo box:
4. Relink the selected league:
- Relink Flag
- Relink composition league (from dt0f.img unnamed_1982):
- Relink emblem (from dt04.img or dt06.img):
Press APPLY, don´t forget save!
5. Save the exe file.

Please report bug to: