I am the sole technical support person in my school. I've been trying very unsuccessfully to update our fleet of iPad Mini 4 s to updated iOS. they are currently stuck at 10.3.1 and I would like to have newer versions so I can deploy updated apps. I've tried resetting devices, I've tried Apple Support, and I've gone nowhere.  Please help.   The System Manager sends the command and I have the device unlocked but nothing is happening. I've recently updated tokens to see if that would help, but nothing works.  I'm on my last little bit of patience with these things.  ... View more