I seem to be rather dense about how to download iOS 4.2. I plugged the cable between my iPAD and my MacBook Pro and the iTunes icon on my MBP started bouncing. So, I clicked it and it started sync'ing my iPAD with my MBP and when that was done, that was the end of it; nothing else happened. Could someone give me a few "detailed" instructions as to how I go about downloading iOS 4.2. Those who respond, THANKS very much. Your help will be greatly appreciated.