Galaxy S26 Ultra Beta Spotted
Beta firmware for the Galaxy S26 Ultra is already on Samsung's servers.
If you've been checking the Samsung Members app on your Galaxy S26 in anticipation of the One UI 9.5 beta, you won't have to wait much longer. A One UI 9.5 beta build for the Galaxy S26 Ultra has appeared on update servers, which is typically the final step before the company opens registrations.
Samsung has not announced the beta or a launch date, but its last point-five update, One UI 8.5, opened to testers on December 8, 2025. One UI 9.5 is expected to launch with the next Galaxy S generation early next year, so a beta release is imminent. Signing up is expected to require registration via Samsung Members in supported regions such as Germany, India, Poland, South Korea, the UK, or the US, using an eligible unlocked device.
The spotted build is firmware version S948BXXU6ZZK3 for the S26 Ultra only, though other S26 variants and servers will likely receive the beta. Carrier-locked devices may be excluded from the initial beta phase, mirroring previous rollout restrictions.
Expected Timeline
Samsung previously opened the One UI 8.5 beta on December 8, 2025, for the Galaxy S25 lineup, with phased rollouts reaching users in Poland and India later that month. Subsequent mid-cycle updates and beta phases have followed predictable development patterns tied to Android version releases.
One UI 9.5 remains based on Android 17, positioning it in the mid-cycle slot ahead of the next flagship hardware launch. While Samsung has not confirmed a specific date for its next major hardware event, historical timing points toward January or February.
Industry observers have debated whether registrations might open as early as November or stretch into December, but the presence of actual firmware builds on Samsung's servers remains the strongest indicator of an imminent rollout.
Installation and Feedback
Before installing beta software, users are advised to update all applications and back up data to a computer using Smart Switch, as pre-release firmware carries a risk of data corruption. Bug reports can be submitted directly through the Samsung Members app under the beta feedback section.
Withdrawing from the beta program requires a manual downgrade process via Smart Switch on a computer, which wipes testing data from the device. Users who choose to remain in the program will automatically receive the stable release of One UI 9.5 once it becomes publicly available.
