My relatively new use of Apple products means I am a little on the slow side, but if I have a 4s Phone with OS 4 for instance, when I sync Itunes it wants to download the OS 5 update right ? No Problem, 800+ meg not too bad... But why must I down load the same update for my Iphone 3 and Itouch 4??? I understand that each device has its own OS, but if I have already downloaded it once, I should be able to use it on all of my devices. As it stands now, with 3 devices i use up 2.4gb of my download to updates. It makes me balk a little when considering 2 ipads of the kids. My updates would jump to 4gb, just on half of my monthly quota.... Is there any explanation for this or a way around it...??