Hi trying to update my iOS from the current to iOS 16

Hello osas85!

Your iPhone 11 can be updated to the latest iOS, which, as of now, is iOS 16.6.

However, if you’re not there yet, please tap here to learn how to update your iPhone. 

👉 Updating/upgrading your iPhone 

If your iPhone won’t update, please see: If your iPhone or iPad won't update - Apple Support. 

👉 Updating iOS: common issues and solutions - Apple Community

👉 If you see error 9, 4005, 4013, or 4014 when you restore your iPhone

I hope this is helpful. Good Luck!

As you are upgrading two version steps, use the computer method in the above.