How to update iPhone 8 Plus to iOS 17?

Hello!

Unfortunately, you cannot update to iOS 17 on an iPhone 8 Plus.

The last update on an iPhone 8 Plus is iOS 16.7.10

You will have to purchase a new iPhone.

Hope this helps!

Viona

iOS 16 is the end of the line for the iPhone 8 Plus – a phone which originally ran iOS 11.

About iOS 16 Updates - Apple Support

The iPhone 8 Plus cannot run iOS 17 or higher.

That's not technically possible, sorry.

See why in this compatibility chart: