*on my iPad mini, the update downloads, restarts, gets to the "Apple" logo with the running bar, and then randomly restarts and goes back to iOS7. It refuses to update. It's done this almost 10 times. *on my iPod, the update won't even get to the Apple bar. it says "Unable to install update". Frustrating, and disappointing. Is this an issue with Apple servers, or are my devices toast?