(0) Download the latest afs explorer.
(1) First run AFS Explorer. Now go to FILE menu and click on IMPORT. Search for file 0_text.afs from your PES4 "dat" folder.
(2) Now goto ADVANCED menu and click on MODIFY RESERVED SPACE.
For files :
ball00mdl.bin
ball02mdl.bin
ball08mdl.bin
ball09mdl.bin
ball10mdl.bin
ball14mdl.bin
ball15mdl.bin
Click on each one of them and when highlighted press + until you see the number under column "MODIFIED RES SLOT" is over 70000 ( 71680 )
For files :
ball00tex.bin
ball02tex.bin
ball08tex.bin
ball09tex.bin
ball10tex.bin
ball14tex.bin
ball15tex.bin
Click on each one of them and when highlighted press + until you see the number under column "MODIFIED RES SLOT" is over 53000 ( 53248 )
(3) Now click on REGENERATE AFS! and build file 0_text.afs ( I suggest you to backup your original one before rebuild).
(4) Ready now to import balls.
(5) On the zip files you will find a file with name "ball-mdl.bin". Import it to files
ball00mdl.bin
ball02mdl.bin
ball08mdl.bin
ball09mdl.bin
ball10mdl.bin
ball14mdl.bin
ball15mdl.bin
Remember this will setup models for new balls. So you will lost original PES4 balls. If you want to keep any of the balls do not replace the model. The original PES4 balls are :
1 Classic
2 Plain
8 Roteiro
9 Pelias
10 Champions League
14 SY1
15 SY2
To import the new model click with right mouse button on the file to replace and select import file. Import file included in the zip named "ball-mdl.bin".
Now you can import the textures you prefer.
For instance for ball00tex.bin you want to import the Nike Total Aerow (Red) Texture. Click with right mouse button on the file ball00tex.bin and import file "nike-total aerow-tex.bin".
Repeat this with the balls you prfer.