Robin Hoods Playground

hello i need some help or info on to find the jailbrak usb stick for ps3 i cant find it im thinking you cant do it or im looking in the wrong spot im getting mad need help or do i need a ps3key thing to do pm me asap thank im going crazp

I believe you will need to be on FW 3.55 or lower to do a jailbreak I am pretty sure