Samsung Galaxy Tab Active5 5G (SM-X308U) Firmware Overview
What is the latest SM-X308U firmware?
X308UVLSEDZI1, released September 17, 2026 with Android 16. It is a security update on bootloader binary 14. The archive holds 26 official builds across 10 regions (CSC). Each one is the full stock ROM (flash file) for Odin, not an OTA patch.
Is the Samsung Galaxy Tab Active5 5G still getting updates?
Yes. The newest build is from September 2026, and 10 of 10 regions already have a build from that month; the rest usually follow within a few weeks.
Can I downgrade the SM-X308U firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 12 to 15:
- Binary 15 — since Sep 2026
- Binary 14 — since Aug 2026
- Binary 13 — since Jul 2026
- Binary 12 — since Jun 2026
A phone already on binary 15 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 15 build. How to read a build number.
All SM-X308U firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
X308UVLSEDZI1
Security update
|
14 | BMC | 16 |
2026-09-17 | Download |
|
X308UVLSEDZI1
Security update
|
14 | FMC | 16 |
2026-09-17 | Download |
|
X308UVLSEDZI1
Security update
|
14 | TBT | 16 |
2026-09-17 | Download |
|
X308UVLSEDZI1
Security update
|
14 | CHR | 16 |
2026-09-17 | Download |
|
X308UUESFDZI1
Security update
|
15 | ATT | 16 |
2026-09-17 | Download |
|
X308UUESFDZI1
Security update
|
15 | VZW | 16 |
2026-09-17 | Download |
|
X308UUESFDZI1
Security update
|
15 | XAA | 16 |
2026-09-17 | Download |
|
X308UUESFDZI1
Security update
|
15 | TMB | 16 |
2026-09-17 | Download |
|
X308UVLSEDZI1
Security update
|
14 | XAC | 16 |
2026-09-17 | Download |
|
X308UVLSEDZI1
Security update
|
14 | RWC | 16 |
2026-09-17 | Download |
|
X308UUESEDZH2
Security update
|
14 | ATT | 16 |
2026-08-25 | Download |
|
X308UUESEDZH2
Security update
|
14 | VZW | 16 |
2026-08-25 | Download |
|
X308UUESEDZH2
Security update
|
14 | XAA | 16 |
2026-08-25 | Download |
|
X308UUESEDZH2
Security update
|
14 | TMB | 16 |
2026-08-25 | Download |
|
X308UVLSDDZG4
Security update
|
13 | TBT | 16 |
2026-07-28 | Download |
|
X308UVLSDDZG4
Security update
|
13 | CHR | 16 |
2026-07-28 | Download |
|
X308UVLSDDZG4
Security update
|
13 | XAC | 16 |
2026-07-28 | Download |
|
X308UVLSDDZG4
Security update
|
13 | RWC | 16 |
2026-07-28 | Download |
|
X308UVLSDDZG4
Security update
|
13 | BMC | 16 |
2026-07-28 | Download |
|
X308UVLSDDZG4
Security update
|
13 | FMC | 16 |
2026-07-28 | Download |
|
X308UUESDDZG3
Security update
|
13 | ATT | 16 |
2026-07-16 | Download |
|
X308UUESDDZG3
Security update
|
13 | TMB | 16 |
2026-07-16 | Download |
|
X308UUESDDZG3
Security update
|
13 | VZW | 16 |
2026-07-16 | Download |
|
X308UUESDDZG3
Security update
|
13 | XAA | 16 |
2026-07-16 | Download |
|
X308UVLSCDZF3
Security update
|
12 | CHR | 16 |
2026-06-25 | Download |
|
X308UVLSCDZF3
Security update
|
12 | FMC | 16 |
2026-06-25 | Download |
Latest SM-X308U Firmware by Region
The newest build for each region (CSC) code. Not sure which region your phone uses? See the CSC code guide.
| Region | Latest build | Bit | Android | Date |
|---|---|---|---|---|
| ATT | X308UUESFDZI1 | 15 | 16 | 2026-09-17 |
| BMC | X308UVLSEDZI1 | 14 | 16 | 2026-09-17 |
| CHR | X308UVLSEDZI1 | 14 | 16 | 2026-09-17 |
| FMC | X308UVLSEDZI1 | 14 | 16 | 2026-09-17 |
| RWC | X308UVLSEDZI1 | 14 | 16 | 2026-09-17 |
| TBT | X308UVLSEDZI1 | 14 | 16 | 2026-09-17 |
| TMB | X308UUESFDZI1 | 15 | 16 | 2026-09-17 |
| VZW | X308UUESFDZI1 | 15 | 16 | 2026-09-17 |
| XAA | X308UUESFDZI1 | 15 | 16 | 2026-09-17 |
| XAC | X308UVLSEDZI1 | 14 | 16 | 2026-09-17 |
How to Flash SM-X308U Firmware
Put the Samsung Galaxy Tab Active5 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 15 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.