Not able to update the latest version

Id you have an add-on VPN client app, or an iOS beta profile installed, remove it.

How to uninstall iOS or iPadOS beta software - Apple Support

If you have tried all that and tried the Wi-Fi update path, try using a computer.

Both paths are described here: Update your iPhone or iPad - Apple Support

minal194 Said:

"Not able to update latest version"

-------

Update Using a Computer:

Have a Computer Handy? If so, try using a computer to update. Use my user tip: Update your iPhone Using a Computer - User Tip