I have four active iOS devices - ipod IV, iPad mini2, iPad Air and new iPad Pro. Every time a new OS update, I have to download a LARGE file separately for each device. I do not understand why Apple does not just generate one update file that can adapt to the individual models. (After all, every App has to do that, to be fully universal, or at least within the range of more than just the most current devices.... It would save them MASSIVE amounts of server clog, it seems that almost every iDevice user I know has more than one. iPhone or iPod for 'lifestyle' - shopping, contacts, phone index, etc. or something larger for business/study use. Even if only 10% of us have more than one iP?d, the option for a multi-device version as an option would still save Apple - and the users - a lot of bandwidth.