Overview
- Samsung has released the CYH3 firmware for Galaxy S24, Z Fold 6 and Z Flip 6, bringing an Android 16–based One UI 8 beta with the August 2025 security update in a roughly 3.2 GB package.
- Users can sign up for the beta through the Samsung Members app, but slots are limited and any downgrade to One UI 7 requires a full device reset.
- Reports conflict on which markets have immediate access, with some citing only South Korea and the UK and others adding the US and India to the initial rollout.
- One UI 8 focuses on performance optimizations and AI-driven refinements—such as integrating the Now Bar with Live Updates—instead of a full visual redesign.
- Two anticipated features, 'Now Brief' and 'Instant Audio Eraser', are missing on current S24 builds, and Samsung plans to open testing to older flagships in September ahead of an October release.