there are mod chip protected games
 

right dropship is mod protected on the origial so the backups if done yourself will be its after the black ps2 screen so you cant use action replay drop ship shows a blue screen of death.alone in the dark mod protection is on the boot it will not load with the mod on but a back up will load when AR is used plus with dropship there is a klisto rip that must of removed mod protection

please feel free to check this yourself plus any comments on this subjects