IPad Air 2 (cellular) upgrade to 9.3.1 won't run (after "agreeing", takes me to home screen) When trying to upgrade to 9.3.1, the terms of service come up for the upgrade, and when clicking agree (twice -- there's two popups about agreeing), I'm redirected to the home screen and nothing else happens. Note: I had this problem with 9.3, and at the time, the 9.3 update was not signed, but as of today, IPSW says this device's update is signed and available, yet the problem remains, even after a restart.

A power cable is attached to the device (with ~80% life). I also tried closing all open applications. Still same result.

Any ideas on how to get the update installed?
Installing via iTunes works (i.e., plug iPad into computer with iTunes running), so I ended up doing that.  

For others that run into this problem: you may want to make sure you have enough disk space on your device. I had 32gb, so I know that wasn't my problem.  

I suspect my problem had something to do with the 9.3 update arriving, and then Apple unsigning it because of its bugs; and maybe when 9.3.1 came out, my iPad was confused?  shrugs