My signature has links to tutorials involving pictures. In them is also tutorials for you to get the game's eboot, decrypt it, add codes, encrypt it, and copy back to your PS3. Give it a try.
PS3 Game Cheats Database And Tutorials July 7, 2019 http://www.mediafire.com/file/9781uxzd2wjws92/PS3_Game_Cheats_Database_And_Tutorials_July_7%2C_2019.7z/file https://www.4shared.com/s/fLf6qQ66Zee https://www.sendspace.com/file/jvsdbd