Samsung Galaxy Tab S11 Ultra (SM-X936N) Firmware Overview
What is the latest SM-X936N firmware?
X936NKOU9CZJ5, released October 26, 2026 with Android 17. It is a feature update on bootloader binary 9. The archive holds 11 official builds across 1 region (CSC). Each one is the full stock ROM (flash file) for Odin, not an OTA patch.
Is the Samsung Galaxy Tab S11 Ultra still getting updates?
Yes. The newest build is from October 2026.
Which Android versions did it get?
The SM-X936N builds in the archive run Android 16 to 17. The earliest build we have for each version:
- Android 17: X936NKOU9CZJ5 (Oct 2026), 1 build in total
- Android 16: X936NKOU2AYI4 (Sep 2025), 9 builds in total
Can I downgrade the SM-X936N firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 2 to 9:
- Binary 9 — since Sep 2026
- Binary 8 — since Aug 2026
- Binary 7 — since Jul 2026
- Binary 6 — since Jun 2026
- Binary 5 — since Feb 2026
- Binary 4 — since Jan 2026
- Binary 3 — since Oct 2025
- Binary 2 — since Sep 2025
A phone already on binary 9 rejects builds with a lower binary in Odin ("SW REV CHECK FAIL"), so it can go back to an earlier Android version only if that version has a binary 9 build. How to read a build number.
All SM-X936N firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
X936NKOU9CZJ5
Feature update
|
9 | KOO | 17 |
2026-10-26 | Download |
|
X936NKOS9BZI1
Security update
|
9 | KOO | 16 |
2026-09-10 | Download |
|
X936NKOS8BZH4
Security update
|
8 | KOO | 16 |
2026-08-24 | Download |
|
X936NKOS7BZG3
Security update
|
7 | KOO | 16 |
2026-07-14 | Download |
|
X936NKOS6BZF4
Security update
|
6 | KOO | 16 |
2026-06-18 | Download |
|
X936NKOS5AZB8
Security update
|
5 | KOO | 16 |
2026-02-23 | Download |
|
X936NKOU4AZA7
Feature update
|
4 | KOO | 16 |
2026-01-26 | Download |
|
X936NKOS3AYJ4
Security update
|
3 | KOO | 16 |
2025-10-30 | Download |
|
X936NKOU2AYJ1
Feature update
|
2 | KOO | 16 |
2025-10-13 | Download |
|
X936NKOU2AYI4
Feature update
|
2 | KOO | 16 |
2025-09-17 | Download |
|
X936NKOU5BZE3
Feature update
|
5 | KOO | — |
N/A | Download |
How to Flash SM-X936N Firmware
Put the Samsung Galaxy Tab S11 Ultra into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Pick a build with Bit 9 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.