Samsung Galaxy S8 (SM-G9508) Firmware Overview
What is the latest SM-G9508 firmware?
G9508ZMS6DUD1, released April 27, 2021 with Android 9. It is a security update on bootloader binary 6. 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 S8 still getting updates?
Most likely not: there has been no new firmware since April 2021, so Android 9 is the last version this model got. The final builds below are still the best choice for a clean reinstall.
Which Android versions did it get?
The SM-G9508 builds in the archive run Android 8 to 9. The earliest build we have for each version:
- Android 9: G9508ZMU3DSC9 (Mar 2019), 19 builds in total
- Android 8: G9508ZMS3CSA1 (Jan 2019), 1 build in total
Can I downgrade the SM-G9508 firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 1 to 6:
- Binary 6 — since Aug 2020
- Binary 5 — since Dec 2019
- Binary 4 — since Jul 2019
- Binary 3 — since Oct 2018
- Binary 2 — since Nov 2017
- Binary 1 — since Aug 2017
A phone already on binary 6 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 6 build. How to read a build number.
All SM-G9508 firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
G9508ZMS6DUD1
Security update
|
6 | CHM | 9 |
2021-04-27 | Download |
|
G9508ZMU6DUC1
Feature update
|
6 | CHM | 9 |
2021-04-07 | Download |
|
G9508ZMU6DTL2
Feature update
|
6 | CHM | 9 |
2021-01-06 | Download |
|
G9508ZMS6DTJ1
Security update
|
6 | CHM | 9 |
2020-10-30 | Download |
|
G9508ZMU6DTH1
Feature update
|
6 | CHM | 9 |
2020-10-13 | Download |
|
G9508ZMU6DTH1
Feature update
|
6 | CHM | 9 |
2020-08-20 | Download |
|
G9508ZMU6DTH1
Feature update
|
6 | CHM | 9 |
2020-08-11 | Download |
|
G9508ZMU5DTF1
Feature update
|
5 | CHM | 9 |
2020-06-04 | Download |
|
G9508ZMU5DTB1
Feature update
|
5 | CHM | 9 |
2020-02-13 | Download |
|
G9508ZMU5DTA1
Feature update
|
5 | CHM | 9 |
2020-01-06 | Download |
|
G9508ZMU5DSL1
Feature update
|
5 | CHM | 9 |
2019-12-11 | Download |
|
G9508ZMU4DSI1
Feature update
|
4 | CHM | 9 |
2019-09-25 | Download |
|
G9508ZMU4DSI1
Feature update
|
4 | CHM | 9 |
2019-09-24 | Download |
|
G9508ZMU4DSH2
Feature update
|
4 | CHM | 9 |
2019-08-22 | Download |
|
G9508ZMU4DSG2
Feature update
|
4 | CHM | 9 |
2019-07-23 | Download |
|
G9508ZMU3DSF2
Feature update
|
3 | CHM | 9 |
2019-06-12 | Download |
|
G9508ZMU3DSD3
Feature update
|
3 | CHM | 9 |
2019-04-16 | Download |
|
G9508ZMU3DSD1
Feature update
|
3 | CHM | 9 |
2019-04-04 | Download |
|
G9508ZMU3DSC9
Feature update
|
3 | CHM | 9 |
2019-03-22 | Download |
|
G9508ZMS3CSA1
Security update
|
3 | CHM | 8 |
2019-01-23 | Download |
Older SM-G9508 Builds (Archive)
8 earlier builds from the samdb.org catalogue. They are not in the download list above; the link searches for the build on the partner site.
| Build / PDA | Bit | Month | Regions (CSC) | |
|---|---|---|---|---|
| G9508ZMU3CRJ1 | 3 | Oct 2018 | CHM | Find |
| G9508ZMU2CRF3 | 2 | Jun 2018 | CHM | Find |
| G9508ZMU2CRF2 | 2 | Jun 2018 | CHM | Find |
| G9508ZMU2CRE1 | 2 | May 2018 | CHM | Find |
| G9508ZMU2CRD4 | 2 | Apr 2018 | CHM | Find |
| G9508ZMU2AQK8 | 2 | Nov 2017 | CHM | Find |
| G9508ZMU1AQJ4 | 1 | Oct 2017 | CHM | Find |
| G9508ZMU1AQH6 | 1 | Aug 2017 | CHM | Find |
How to Flash SM-G9508 Firmware
Put the Samsung Galaxy S8 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 6 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.