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November 10, 2026 • 3 min read
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It hasn’t been long since Samsung officially unveiled its flagship tablet lineup for the year: the Galaxy Tab S12 series. Even so, the devices are already picking up their first software updates. The Galaxy Tab S12+ and Tab S12 Ultra have started receiving the October 2026 patch based on One UI 9. This brings security fixes and potentially improves stability.
Galaxy Tab S12+ and Tab S12 Ultra grab October 2026 security update
Samsung has started rolling out the October 2026 security update for the Galaxy Tab S12+ and Tab S12 Ultra in its home country of South Korea. The Wi-Fi variants of the two tablets are receiving firmware versions X840XXU2AZJA and X940XXU2AZJA, respectively. Sadly, it’s still the October security patch rather than the newer November 2026 update. The November release is currently limited to the Galaxy S26 series, Z Fold 8, and Flip 8 in Korea.
It’s worth noting that this is a routine security release and doesn’t appear to bring any major new features, based on the official changelog. The October update patches 76 vulnerabilities. Also, since this is the first software update for the two tablets, Samsung could be using the opportunity to iron out some early issues. Furthermore, it could improve overall stability before the devices reach more users.
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So, if you own a Galaxy Tab S12+ or Tab S12 Ultra, head straight to Settings > Software updateand check if the new update is waiting for you. As for users outside Korea, Samsung should expand the rollout to other markets soon, perhaps later this week.
For those unaware, both the Galaxy Tab S12+ and Tab S12 Ultra already ship with One UI 9 out of the box. They also come with Samsung’s latest Galaxy AI features. That means there’s no major software upgrade to look forward to just yet.
When can you expect One UI 9.5 for the Galaxy Tab S12 series?
Samsung is gearing up for One UI 9.5, its next major software release. The beta program expected to kick off for the Galaxy S26 series as early as next week.
Users of the Tab S12 lineup could also get a taste of the One UI 9.5 beta program down the road. Samsung previously included the Galaxy Tab S11 and Tab S11 Ultra in its One UI 8.5 beta program. So there’s a possibility that their successors could receive similar treatment.
Of course, nothing is confirmed yet. Even if Samsung includes the new tablets in the One UI 9.5 beta program, their turn might not come until after the Galaxy S27 launch at Galaxy Unpacked in early 2027.
Everything we know, in one place: we keep Galaxy Tab S12 Ultra: Everything You Need to Know current as new details are confirmed.
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