One ui 8 beta

Unless you have SIM and your phone from supported countries you can not.

But since Official update is coming in less than week ,why you want to have beta?

Hi 👋
To install the One UI 8 Beta on your Galaxy S24 Ultra (if available in your region):

1. Open Samsung Members app → Check the Notices/Banners section on the home page. If your country is part of the Beta program, you’ll see a banner for One UI Beta Program.

2. Register for Beta → Tap the banner → Enroll your device.

3. Update Software → Go to Settings > Software update > Download and install. The Beta firmware will appear after registration.

4. Note → Beta is only available in select countries (like Korea, USA, Germany, India, UK). If you don’t see the banner, it means your region isn’t included yet.