Pretty much any PSN content or DLC is available if your PS3 is on CFW. Once Sony locked down the PS3 again newer consoles over 3.55 could not.
But everything can be decrypted and installed on a hacked PS3 these days.
I have heard some rumors that a firmware hack may have been discovered for the latest PS3 firmware, but how true it is I don't know.
Edit: A better way to put it, is if some one could fake all of that information about the downloads the best thing to fake would be a firmware upgrade.