Samsung has started rolling out its November 2026 security update for the Galaxy S26, S26+ and S26 Ultra outside South Korea, according to Tarun Vats. The firmware ends in BZK1 and is mainly a security release with no new features. It is separate from the One UI 9.5 test builds Samsung is working on, so it doesn’t mean the beta has started.
| Detail | Status |
| Phones | Galaxy S26, S26+, S26 Ultra |
| Build suffix | BZK1 |
| Korean S26 build | S942NKSS6BZK1 |
| Patch level | November 2026 |
| Korean download size | About 510MB |
| Regions | South Korea first, then Europe and India reported |
| Rollout | Staged, still expanding |
The Korean release came first, around November 9, with the S26 build S942NKSS6BZK1 and a download of about 510MB. Reports now place the update in Europe and India, though one report says Europe and wider Asia, so the exact country list isn’t settled. We couldn’t confirm full build strings for the European and Indian versions, and the downloads reportedly run larger, at about 600MB, so treat sizes as approximate and expect them to differ by model and region. Samsung rolls updates out in stages, so you may not see it on your phone yet even if your country is covered.
The update focuses on fixes. Reports count the November bulletin differently, from 179 vulnerabilities to more than 200, depending on whether Google, Samsung and chip-maker fixes are counted together. Samsung’s own part reportedly covers 24 issues, touching areas like the Exynos modem, the bootloader and apps such as Contacts. Samsung hasn’t published a full list tied to each phone, and the changelog doesn’t mention any visible changes. We also couldn’t confirm a bootloader revision change in this update, which matters mainly if you flash firmware by hand.
To check, open Settings, tap Software update, then Download and install. The wider test work is covered in our report on Samsung testing One UI 9.5 on the Galaxy S26 series, and the public beta timing remains unconfirmed.
M Adnan Akram is the founder and lead writer at Phoonomo, covering mobile technology with a primary focus on Samsung and the broader smartphone industry, alongside emerging developments in AI. He follows product launches, spec leaks, and industry trends closely to keep readers informed with timely updates.
Discover more from Phoonomo
Subscribe to get the latest posts sent to your email.
