I ended up selling my first gen iPad mini because it stopped running normally after several iOS upgrades. Safari would crash, there was lots of input lag, etc. Now, it's happening with my first gen iPad Air on iOS 10. I wish Apple would let us run earlier versions of iOS on our devices. I emailed Tim Cook, and his senior staff responded with "we currently do not have plans to offer iOS downgrades". Why would I buy a new Apple iPad if it too will become crap in an iOS update or two? I am just frustrated, and hopefully someone one else out there can commiserate with me.