If using Sider, copy the ball folders into your content\ball-server directory and update your map_balls.txt accordingly.
Copy the .cpk file into the download folder of your PES 2017 directory. Use a "DPFilelist Generator" tool to add and activate the new ballpack. Download File PES2017 New BallPack Season 21-22...
Download the ballpack files and extract the archive (typically a ZIP or RAR file) using software like WinRAR. If using Sider, copy the ball folders into
Run the game to enjoy the updated 21-22 season visuals. If using Sider