GoKawiilOne UI 9.5 beta firmware spotted for Galaxy S26 Ultra ahead of rollout
A One UI 9.5 beta build, firmware S948BXXU6ZZK3, has appeared on Samsung's Korean and US update servers for the Galaxy S26 Ultra, a step that usually precedes open registration. Samsung hasn't confirmed a date, but its prior point-five update opened testing on December 8, 2025. Enrollment, once live, will go through the Samsung Members app and will likely be limited to six countries: Germany, India, Poland, South Korea, the UK and the US.
GoKawiil's interpretation of the reporting above, not reported fact.
The firmware's appearance on update servers suggests a public beta could launch soon, giving early access to features ahead of One UI 9.5's expected pairing with the Galaxy S27 in 2027. Enthusiast site SammyGuru expects the beta to extend beyond the S26 Ultra to other S26 models, the S25 series, and the Z Fold 8/Flip 8, though carrier-locked devices may be excluded based on past precedent.
- One UI 9.5 beta firmware for the Galaxy S26 Ultra has surfaced on Samsung's servers, signaling an imminent public beta.
- Signup will likely require the Samsung Members app and availability may be restricted to six countries and unlocked phones.
- The beta could expand to other S26 models, the S25 series, and foldables, according to enthusiast reporting.
Samsung Galaxy S26 Ultra — If you're eager to try the One UI 9.5 beta firsthand, the Galaxy S26 Ultra is the flagship device getting first access to it. It's Samsung's top-tier phone, making it the ideal platform for testing cutting-edge software features before anyone else.
See Samsung Galaxy S26 Ultra on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: engadget.com — Luke James, 2026-11-08
Published there as: “Samsung One UI 9.5 beta may be coming soon: Here's how to sign up for the program”
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