iOS 13.6 and iPad OS 13.6 download okay, but won't install
iOS 13.6 (iPhone X) and iPad OS 13.6 (iPad Pro) download okay, but won't install. I get an error message. Both devices have plenty of storage and are fully charged. In12 years and countless OS updates, I have never had this issue. Usually, updates are seamless. Oddly, it’s affecting both devices. Updating through iTunes with a Mac is not going to happen.
Thanks for any help.