Samsung Galaxy Tab S8 Ultra 5G (SM-X906N) Firmware Overview
What is the latest SM-X906N firmware?
X906NKOUBJZJ3, released October 15, 2026 with Android 16. It is a feature update on bootloader binary 11. The archive holds 20 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 S8 Ultra 5G still getting updates?
Yes. The newest build is from October 2026.
Which Android versions did it get?
The SM-X906N builds in the archive run Android 12 to 16. The earliest build we have for each version:
- Android 16: X906NKOS9JYK1 (Nov 2025), 7 builds in total
- Android 15: X906NKOS9IYF4 (Jul 2025), 2 builds in total
- Android 14: X906NKOU5FWK7 (Dec 2023), 4 builds in total
- Android 13: X906NKOU2CVK5 (Nov 2022), 5 builds in total
- Android 12: X906NKOU2AVG9 (Jul 2022), 2 builds in total
Can I downgrade the SM-X906N 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 11:
- Binary 11 — since May 2026
- Binary 10 — since Feb 2026
- Binary 9 — since Nov 2024
- Binary 5 — since Aug 2023
- Binary 4 — since Apr 2023
- Binary 3 — since Dec 2022
- Binary 2 — since Jul 2022
A phone already on binary 11 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 11 build. How to read a build number.
All SM-X906N firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
X906NKOUBJZJ3
Feature update
|
11 | KOO | 16 |
2026-10-15 | Download |
|
X906NKOSBJZH3
Security update
|
11 | KOO | 16 |
2026-08-18 | Download |
|
X906NKOSBJZE1
Security update
|
11 | KOO | 16 |
2026-05-21 | Download |
|
X906NKOU9JYJ4
Feature update
|
9 | KOO | 16 |
2026-03-05 | Download |
|
X906NKOSAJZB6
Security update
|
10 | KOO | 16 |
2026-03-05 | Download |
|
X906NKOS9JZA3
Security update
|
9 | KOO | 16 |
2026-01-15 | Download |
|
X906NKOS9JYK1
Security update
|
9 | KOO | 16 |
2025-11-27 | Download |
|
X906NKOU9IYDC
Feature update
|
9 | KOO | 15 |
2025-10-27 | Download |
|
X906NKOS9IYF4
Security update
|
9 | KOO | 15 |
2025-07-01 | Download |
|
X906NKOU5FXA4
Feature update
|
5 | KOO | 14 |
2025-04-28 | Download |
|
X906NKOS9HYB1
Security update
|
9 | KOO | 14 |
2025-02-06 | Download |
|
X906NKOU9HXK5
Feature update
|
9 | KOO | 14 |
2024-11-13 | Download |
|
X906NKOU5FWK7
Feature update
|
5 | KOO | 14 |
2023-12-05 | Download |
|
X906NKOU5EWH6
Feature update
|
5 | KOO | 13 |
2023-08-22 | Download |
|
X906NKOU4DWD8
Feature update
|
4 | KOO | 13 |
2023-05-11 | Download |
|
X906NKOU3DWB4
Feature update
|
3 | KOO | 13 |
2023-02-23 | Download |
|
X906NKOU3CVL2
Feature update
|
3 | KOO | 13 |
2022-12-21 | Download |
|
X906NKOU2CVK5
Feature update
|
2 | KOO | 13 |
2022-11-23 | Download |
|
X906NKOU2BVH2
Feature update
|
2 | KOO | 12 |
2022-08-29 | Download |
|
X906NKOU2AVG9
Feature update
|
2 | KOO | 12 |
2022-07-28 | Download |
How to Flash SM-X906N Firmware
Put the Samsung Galaxy Tab S8 Ultra 5G 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 11 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.