Ios progress bar not updating
Here is what you can try when your i Phone stuck on the Verifying Update screen.
Repeating this over and over again for about 5-10 times in a row most probably resolves the issue of stuck verifying update.
The settings include your designated startup disk, display resolution, speaker volume, and other information. Load your Mac in Recovery Mode: press and hold the Command (⌘) and R keys while pushing the power button to start your computer.