Samsung has released the Galaxy Tab S11 November patch for the Tab S11 5G and Tab S11 Ultra 5G in South Korea. The builds are X736NKOSACZK3 for the Tab S11 5G and X936NKOSACZK3 for the Tab S11 Ultra 5G. Both carry a November 12, 2026 release date, the November 5 security patch and Android 17.
Our firmware feed first saw the Tab S11 5G build on November 12 at 18:13 UTC (11:43 pm IST) and the Ultra build on November 13 at 00:11 UTC (5:41 am IST). Samsung’s Korean release notes for both tablets show the same date and patch level.
Galaxy Tab S11 November patch builds
| Tablet | Model | Build | Released | Patch level |
|---|---|---|---|---|
| Galaxy Tab S11 5G | SM-X736N | X736NKOSACZK3 | Nov 12, 2026 | Nov 5, 2026 |
| Galaxy Tab S11 Ultra 5G | SM-X936N | X936NKOSACZK3 | Nov 12, 2026 | Nov 5, 2026 |
Both are South Korea builds on the KOO channel. Samsung’s own pages for the Tab S11 Ultra 5G and the Tab S11 5G list them at the top.
What is in this update
Samsung lists one item, security stabilization code. The Korean note says that security-related stabilization code has been applied. There are no new features, camera changes or One UI changes in the text.
The patch level is November 5, 2026, so it follows the monthly package in Samsung’s November 2026 security bulletin. That bulletin lists 20 Critical Google CVEs, four Samsung Semiconductor CVEs and 24 Samsung SVE items for the month. Samsung doesn’t say which of those fixes land on each tablet, so treat the bulletin as the month’s scope, not a per-device list.
It skips the October patch
These tablets went straight from the September patch to the November one. Samsung’s page shows the One UI 9 build from October 29 (X736NKOU9CZJ5 and X936NKOU9CZJ5) with the September 5 patch, and then the new November builds. Neither Samsung’s page nor our feed has a Korean Tab S11 build with the October 5 patch.
If you installed One UI 9 on a Korean Tab S11 earlier this month, this Galaxy Tab S11 November patch is your first security update since. Our Galaxy Tab One UI 9 status page tracks how the rest of the tablet lineup is doing.
Check the bootloader digit before you flash anything
Look at the fifth character from the end of each build. On the One UI 9 build it was a 9, and on the new build it is an A. That character is the bootloader binary, and a higher one normally means Odin will refuse a package with a lower one.
Samsung’s page doesn’t print a downgrade warning for this build, so don’t count on going back. If you flash by hand, use the newest package for your exact model. Our firmware version guide shows how to read each part of the build number.
Only the Korean 5G tablets have it so far
Our feed lists no Galaxy Tab S11 November patch build for any other Tab S11 model. The Wi-Fi Galaxy Tab S11 and Tab S11 Ultra are still on X730XXU9CZJ6 and X930XXU9CZJ6, the October 29 One UI 9 builds with the September patch. Samsung hasn’t said when other regions will follow.
The Galaxy Tab S12 followed the same pattern, with Korea first. We covered that in our Tab S12 Korea update post, and the November 2026 security update tracker will add each new region as it appears.
How to check and install it
- Connect your tablet to Wi-Fi and keep the battery above 50 percent.
- Open Settings > Software update > Download and install.
- If a build ending in ZK3 shows up, tap Download and then Install now.
- Afterward, open Settings > About tablet > Software information and compare the build number with the table above.
If nothing appears, your tablet may be outside the first batch. You can compare other models in our Samsung firmware checker. Has the Galaxy Tab S11 November patch reached your tablet yet? Tell us your model number and country in the comments.
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