I have a 4.3.3 iPad 2 wifi that is jailbreaked. Any reasons (other than tethered) not to upgrade to 5.0.1 and jailbreak using the following guide? http://www.redmondpie.com/jailbreak-5.0.1-semi-untethered-iphone-4-3gs-ipad-ipod-touch-using-redsn0w-semitether/ I remember before there was some discussion that upgrading to this may exclude the device from future jailbreaks. Is this still true? If I have the blobs saved for 4.3.3, can I always come back to 4.3.3 and jailbreak?