Samsung Galaxy Tab S8+ 5G (SM-X806N) Firmware Overview
What is the latest SM-X806N firmware?
X806NKOUBJZJ3, 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+ 5G still getting updates?
Yes. The newest build is from October 2026.
Which Android versions did it get?
The SM-X806N builds in the archive run Android 12 to 16. The earliest build we have for each version:
- Android 16: X806NKOU9JYJ4 (Oct 2025), 6 builds in total
- Android 15: X806NKOU9IYDC (Apr 2025), 2 builds in total
- Android 14: X806NKOU5FWK7 (Dec 2023), 3 builds in total
- Android 13: X806NKOU2CVK5 (Nov 2022), 6 builds in total
- Android 12: X806NKOU2AVG9 (Jul 2022), 3 builds in total
Can I downgrade the SM-X806N 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 Aug 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-X806N firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
X806NKOUBJZJ3
Feature update
|
11 | KOO | 16 |
2026-10-15 | Download |
|
X806NKOSBJZH3
Security update
|
11 | KOO | 16 |
2026-08-18 | Download |
|
X806NKOSAJZB6
Security update
|
10 | KOO | 16 |
2026-02-15 | Download |
|
X806NKOS9JZA3
Security update
|
9 | KOO | 16 |
2026-01-14 | Download |
|
X806NKOS9JYK1
Security update
|
9 | KOO | 16 |
2025-11-27 | Download |
|
X806NKOU9JYJ4
Feature update
|
9 | KOO | 16 |
2025-10-17 | Download |
|
X806NKOS9IYF4
Security update
|
9 | KOO | 15 |
2025-07-01 | Download |
|
X806NKOU9IYDC
Feature update
|
9 | KOO | 15 |
2025-04-16 | Download |
|
X806NKOS9HYB1
Security update
|
9 | KOO | 14 |
2025-02-06 | Download |
|
X806NKOU9HXK5
Feature update
|
9 | KOO | 14 |
2024-11-13 | Download |
|
X806NKOU5FWK7
Feature update
|
5 | KOO | 14 |
2023-12-05 | Download |
|
X806NKOU5EWH6
Feature update
|
5 | KOO | 13 |
2023-08-22 | Download |
|
X806NKOU4DWD8
Feature update
|
4 | KOO | 13 |
2023-05-11 | Download |
|
X806NKOU3DWC1
Feature update
|
3 | KOO | 13 |
2023-03-11 | Download |
|
X806NKOU3DWB4
Feature update
|
3 | KOO | 13 |
2023-02-23 | Download |
|
X806NKOU3CVL2
Feature update
|
3 | KOO | 13 |
2022-12-21 | Download |
|
X806NKOU2CVK5
Feature update
|
2 | KOO | 13 |
2022-11-23 | Download |
|
X806NKOU2BVI1
Feature update
|
2 | KOO | 12 |
2022-09-14 | Download |
|
X806NKOU2BVH5
Feature update
|
2 | KOO | 12 |
2022-08-29 | Download |
|
X806NKOU2AVG9
Feature update
|
2 | KOO | 12 |
2022-07-28 | Download |
How to Flash SM-X806N Firmware
Put the Samsung Galaxy Tab S8+ 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.