How to revert back to iOS 18 without a computer

You will need a Mac or PC. No exceptions.

If you don't have one, you'll need to borrow one or take the phone to an Apple Store or Best Buy to use a Mac there.

Since this is quite an involved task, a better option might be to take the phone to an authorized Apple service shop in your area for assistance. You can find a list of authorized shops in your area by using this link:

Find Locations

You MUST use a computer to downgrade. There is no way around that. I have to assume you're not a registered developer and if you didn't backup your iPhone to a computer before installing iOS 26 Beta, you've created quite the mess for yourself.

If you don't have a computer, you MUST find one to use. And if you don't have a computer, it means you didn't backup your iPhone to a computer before you installed the beta release. This means, with the exception of anything you may sync to iCloud, once you successfully return to iOS 18.5, all of your other data will be lost.

If you were a developer, you would have been aware of this. You're going to learn a hard lesson here.

How to uninstall iOS or iPadOS beta software - Apple Support

MCMULLEN1235 wrote:

how do iOS 18 from iOS 26 developer how do I put it back on my phone without my computer on iPhone 16 Pro

As already explained by at least two replies in this thread, you do not put iOS 18 back on your phone without the aid of a computer. Asking a "me too" question will not change the answer.

MCMULLEN1235 wrote:

is it easy on your computer to get iOS 18 back on my Mac computer?

Follow the steps here to revert back to iOS 18.5 on your iPhone using a computer. Yes, it is easy.

How to uninstall iOS or iPadOS beta software - Apple Support

Learn how to ⇢ downgrade here.

For further assistance:▷ Apple Developer Support.

Good luck! 👋🏼😉

is it easy on your computer to get iOS 18 back on my Mac computer?

how do iOS 18 from iOS 26 developer how do I put it back on my phone without my computer on iPhone 16 Pro