Currently Being ModeratedMar 19, 2013 6:39 PM (in response to Howard Brazee)
Each device uses a slightly different version of the download file.
Even if you have different generations of the same type device (e.g., an iPhone 5 and an iPhone 4S), they would require different download files.
Currently Being ModeratedMar 20, 2013 2:50 PM (in response to Howard Brazee)
Is it literally "the 2nd device" that is saying the first device is downloading the upgrade?
Or is it iTunes on your computer that is telling you that?
iTunes on your computer is capable of downloading packages simultaneously. I suspect that's what is happening.
Currently Being ModeratedMar 20, 2013 6:09 PM (in response to sberman)
The iPhone, in the spot on the summary where we can check for update or restore, just said that my iPad is downloading the upgrade. It would not let me download the iPhone upgrade at that time.
Currently Being ModeratedMar 20, 2013 6:16 PM (in response to Howard Brazee)
I can't say I've ever tried to update two I-devices simultaneously on iTunes, but the behavior you described seems completely reasonable to me. Each of the iOS updates is about 1 gigabyte. It makes sense to me they would have to be downloaded one at a time.