Even with the correct files, you might hit a wall. Here is how to fix the most frequent issues.
Copy the Ben 10 Ultimate Alien: Cosmic Destruction .pkg file directly to the of the USB drive (do not put it inside any folders). ben 10 ultimate alien cosmic destruction ps3 pkg install
You will see the Ben 10 Ultimate Alien: Cosmic Destruction PKG file listed. Press the button on your controller to begin the installation. Even with the correct files, you might hit a wall