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.