How do I update my iPhone 7 to latest iOS version?

Latest version for the iPhone 7 is iOS 15.8.3

Tap Settings > General > Software Update

The iPhone 7 cannot run iOS 16 or iOS 17, if that might be what you are really asking about.

nondumiso146 wrote:

iOS app update software

Assuming you have a compatible device, see: Update your iPhone, iPad, or iPod touch - Apple Support

And: If your iPhone, iPad, or iPod touch won't update - Apple Support If the above Apple articles do not help, please post back with relevant information. 

The iPhone 7 has reached the end-of-life support for Software Updates to the latest iOS operating system.

You are invited to visit an Apple retail store to discuss your iPhone upgrade options.

Learn about the ⇢ iPhone Upgrade Program. ⇠📲

Good luck! 👋🏼😉

The latest version of iOS for iPhone 7 is iOS 15.

To update software, navigate to Settings > General > Software Update

nondumiso146 Said:

"How do I update my iPhone 7 to latest iOS version?: iOS app update software"

------

Updating an iPhone 7 to iOS 17.6.1:

You can't. Your device does not have the hardware capable of running this iOS.

Update Using a Computer:

Have a Computer Handy? If so, try using a computer to update. Go here: Update your iPhone Using a Computer - User Tip. If WiFi is not a successful option for you, then see about using Ethernet to get a reliable signal. If there is not Ethernet port, then his would be the adapter to use: The Belkin USB-C to Gigabit Ethernet Adapter - Apple

You don’t.