Upgrading IOS with two devices
Whenever there's an IOS upgrade, I tell one of my devices (say it's my iPad), to ugprade via iTunes for OSX. When I click on my iPhone, it tells me that it's downloading IOS for my iPad.
That's fine. But when my iPad is done upgrading, and I click on my iPhone, it starts over as though nothing ever was downloaded.
That wasn't too bad at my old place, where I had a cable modem. But I just moved where we have Wi-Fi. This afternoon, it took 50 minutes to download to my iPad. Then I had to leave. When I got back, I had to reconnect (I suspect it found a different repeater). Now my iPhone is saying 3 hours remaining in its download. I'd better run cafeine to make sure it downloads.
Why does my second device seem to care that the first device is being upgraded - but then not use the download?
iPad, iOS 5, IOS 6