We know that Sony changed something in fw 3.56+ We can reduce our search by comparing the changes with fw 3.55 And than just look into Files that make sense and Reverse them. I would say this downgrade Protections are all the Same in fw > 3.55 So search will be reduced once again. This is only a theory from me. I just follow this scene and haven't a ps3. So i cant say that this is correct or not.