the only way the jailbreak can be blocked is by a firmware update which is software not hardware. sony are not going to come round everyone's house with a pre 3.41 ps3 and change a piece of hardware to stop you using the jailbreak. it will alwayds be software that will do the job such as 3.50 firmware update (which is not working so well) at the moment. the new sony firmware blocks all use of 3rd party usb dongles, so the jailbreak does not work anymore. unless someone finds the signing keys for sony and signs the usb dongle as a sony product it will probably work unless there are furthur checks. hardware is not an option..........................sudeki300