Accidently upgraded from iOS 13.2 to latest iOS 14, how to revert? iPhone popped the new update ready to install screen and I accidently hit install instead of later as I always do. It's now in the process of installing. How may I revert back to previous 13.2 once installation is complete?
You may not roll back from iOS 14 without a jailbreak. Sorry to bear news you may not have expected.

https://9to5mac.com/2020/09/22/ios-14-jailbreak/