I don't have another one to test. But my phone downloaded the update overnight. Which means I have to be careful on not restarting it or else boot loop will ensue. I am on AT&T.
So the only fix I have found is a complete factory reset. Then, whatever you do... DO NOT DOWNLOAD AND INSTALL THE LATEST SECURITY PATCH. Once you install and reboot it will start doing that. Learned that after the third factory reset. Every reset my...