Problems with updating iphone
You can try all of the Regular update fixes above, but in some situations, this won’t fix the problem.
I found that if my device wasn’t updated to the latest official release of i OS, I had problems with getting the latest beta release. Delete the current beta update Go to Settings | General | Storage & i Cloud Usage and tap Manage Storage.
I'll guide you through any potential issues you might have with the i OS 11 update, and tell you the best methods in fixing them.
Below, the guide is divided into two sections: The regular, public updates (the official launches) and the beta updates (the ones you have to sign up to get before anyone else).
Wait for the list to be populated, then scroll down, tap Software Update and then Delete Update.2.
Delete the beta profile Go to Settings | General | Profile (you only get the Profile menu if you’ve got multiple profiles installed, such as joining the beta programme).
To do that, simply open up Safari and load a web page. If it doesn't work, disconnect and reconnect to your Wi-Fi router or turn your router off and on again.
Reset your Network Settings Sometimes a network issue can cause the problem, but you can reset these settings easily.Once you've done that: here's how to fix the annoying "Unable to Verify Update" i OS error for i OS 11, i OS 10, i OS 9.3 and below.