Samsung Galaxy Tab S8 Ultra 5G (SM-X906C) Firmware Overview
What is the latest SM-X906C firmware?
X906CZCUBEZJ3, released October 21, 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-X906C builds in the archive run Android 13 to 16. The earliest build we have for each version:
- Android 16: X906CZCU9EYJ4 (Oct 2025), 6 builds in total
- Android 15: X906CZCU9DYDC (Apr 2025), 3 builds in total
- Android 14: X906CZCU5CWK9 (Dec 2023), 8 builds in total
- Android 13: X906CZCU3BWB5 (Mar 2023), 3 builds in total
Can I downgrade the SM-X906C firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 3 to 11:
- Binary 11 — since Aug 2026
- Binary 10 — since Feb 2026
- Binary 9 — since Nov 2024
- Binary 8 — since Jul 2024
- Binary 7 — since May 2024
- Binary 6 — since May 2024
- Binary 5 — since Aug 2023
- Binary 4 — since Apr 2023
- Binary 3 — since Feb 2023
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-X906C firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
X906CZCUBEZJ3
Feature update
|
11 | CHC | 16 |
2026-10-21 | Download |
|
X906CZCSBEZH3
Security update
|
11 | CHC | 16 |
2026-08-19 | Download |
|
X906CZCSAEZB6
Security update
|
10 | CHC | 16 |
2026-02-18 | Download |
|
X906CZCS9EZA3
Security update
|
9 | CHC | 16 |
2026-01-30 | Download |
|
X906CZCS9EYK1
Security update
|
9 | CHC | 16 |
2025-12-15 | Download |
|
X906CZCU9EYJ4
Feature update
|
9 | CHC | 16 |
2025-10-17 | Download |
|
X906CZCU9DYH4
Feature update
|
9 | CHC | 15 |
2025-08-22 | Download |
|
X906CZCS9DYF4
Security update
|
9 | CHC | 15 |
2025-07-17 | Download |
|
X906CZCU9DYDC
Feature update
|
9 | CHC | 15 |
2025-04-21 | Download |
|
X906CZCS9CYB1
Security update
|
9 | CHC | 14 |
2025-02-19 | Download |
|
X906CZCU9CXK7
Feature update
|
9 | CHC | 14 |
2024-11-14 | Download |
|
X906CZCS8CXJ7
Security update
|
8 | CHC | 14 |
2024-10-21 | Download |
|
X906CZCU8CXHB
Feature update
|
8 | CHC | 14 |
2024-09-09 | Download |
|
X906CZCS8CXG5
Security update
|
8 | CHC | 14 |
2024-07-18 | Download |
|
X906CZCS7CXE9
Security update
|
7 | CHC | 14 |
2024-05-20 | Download |
|
X906CZCU6CXE4
Feature update
|
6 | CHC | 14 |
2024-05-07 | Download |
|
X906CZCU5CWK9
Feature update
|
5 | CHC | 14 |
2023-12-07 | Download |
|
X906CZCU5BWH6
Feature update
|
5 | CHC | 13 |
2023-08-30 | Download |
|
X906CZCU4BWD4
Feature update
|
4 | CHC | 13 |
2023-05-17 | Download |
|
X906CZCU3BWB5
Feature update
|
3 | CHC | 13 |
2023-03-02 | Download |
How to Flash SM-X906C 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.