iOS 12: New iPhone update hit by irritating problem telling users about phantom download

"A new iOS update is now available," the message reads. "Please update from the iOS 12 beta." It will pop up repeatedly, as people use the phone, and even when it is dismissed it will come back. What's more, there is not actually a new iOS update, so the notification is impossible to act on or make go away. The I.F.O. is fuelled by eight electric engines, which is able to push the flying object to an estimated top speed of about 120mph.