i want to jailbreak my ps3, and i want to know what will it do? is it better with it or without? what does it do exacly? and also where can i find a jailbreak usb? can i buy it like at office depot or somewhere? or do i have to order them online? and i just updated the newest version Jan. 27.011 i believe it was. do i have to have a certaint update to jailbreak it? thanks!