A PS3 running OFW 4.11 can in no way at the moment be jailbroken to the extent of playing game files off HDD. Or external. You will have to downgrade your system using progskeet Flasher. Or a similar version. Get out your soldering kit though. Perhaps just wait a little longer until another method arises. Not sure all that is involved as I never went past the golden 3.55 version.