How can I update my iPhone 8 Plus to the lates iOS version?

Blackcat123 wrote:

I need to upgrade

There is no supported means to get an iPhone 8 to the current iOS 17 version.

You will need a newer or new iPhone. iPhone XS, iPhone XR, iPhone SE 2nd gen, or newer, are supported with iOS 17.

iPhone 8, not so much.

To update to the latest iOS version supported by a particular iPhone…

How to: Update your iPhone or iPad - Apple Support

And what to do: If your iPhone or iPad won't update - Apple Support

I’m trying to update my iPhone

Blackcat123 wrote:

I’m trying to update my iPhone

……… and, what happens when you try?

I need to upgrade

Blackcat123 wrote:

I need to upgrade

Please read through the user tip below, then post back with relevant information.

Writing an Effective question

An upgrade would be the purchase of a new phone. Is that what you want to do?