how to downgrade to ios 16

Apple does not support downgrading iOS or iPadOS unless it is a beta version of software.

How to uninstall iOS beta software; click here --> How to uninstall iOS or iPadOS beta software - Apple Support

If you have installed iOS 17 beta software, you must be a registered developer with Apple, since the Public Beta has not even been released yet.

The developer site has all the information that you need.

We are not allowed to discuss beta on this support site.

esemhon wrote:

I want to downgrade my iOS 17 to 16

You can't.

Read the information provided to you when you joined the developers beta.

Just a note to point out that if the user has previously installed iOS 16.4, iOS 16.5 or 16.5.1......

The Beta Profile no longer appears in Settings > General > VPN & Device Management, so it makes it tough to remove something that is not there.

There is a new procedure on the developer site for removing the Beta on iPhones running 16.4 and above.

I want to downgrade my iOS 17 to 16