PS3 Firmware Update 3.56

If you idiotically updated your PS3 with the jailbroken 3.55 firmware you most likely aren't able to play any games..or turn your console on. There is currently no fix for this until 3.56 is decrypted and the master keys are obtained. If the keys are obtained than there is a very good chance we will see a 3.56 CFW and signed package files. If you successfully updated somehow than you might notice if you had a custom patch for MW2 it will still be there until you jailbreak or IW makes a new patch (which won't happen).

-v0rtex