Yes I'd like to know as well. I have PSN games I bought which I can't use because the battery of my PS3 was removed while cleaning it and they won't run without syncing with internet time! I'm not taking even the tiny risk of connecting to the internet with a CFW PS3. That's some seriously insane DRM, even on CFW it would still be working if the battery wasn't removed, gah.
I'm getting a "Registration of the trophy information could not be completed. The game will quit. (80010505)" error when launching after installing game pkg then the pkg... on 3.55 kmeaw what gives?