I'm trying to upgrade and the new OS downloaded but everytime I want to install it, I get:
Software Update Unavailable Software Update is not available at this time. Try again later.
I read that this means I should try later, but I tried many, many times yesterday and today and it didn't go through. Supposedly the device needs to contact Apple to sign the new OS. I also doubt there is so much traffic to Apple servers now, this update is not that new (8 days old). So I wonder if the message is because of either a jailbreak or because something is wrong (bug) when upgrading for such an old iOS to 7.1.