I have iPad2 Wifi 4.3.3 JB. If I upgrade to 5.0.1, as is now recommended, can I complete that operation, then go back to 4.3.3 and re-JB? The question is... will the action of upgrading to 5.0.1 now be or any use at a future time when the JB is made available, but go back in the meantime? Or would I be stuck in 5.0.1 until the next JB? I thought I understood enough of this stuff to figure it out on my own, but I guess not. It seems (in my feeble mind) that if I have blobs for 5.0.1 - which I thought I could obtain just by running Tiny Umbrella or something now, I could get to that point whenever I wished. Thanks.