Remove and download the iOS update againTried that too.
Still won't verify. Something wrong on Apple's end.
If you still can't install the latest version of iOS, try downloading the update again:
- Go to Settings > General > Storage
- Find the iOS update in the list of apps.
- Tap the iOS update, then tap Delete Update.
- Go to Settings > General > Software Update and download the latest iOS update.
Its worked on 3 devices so far.