Galaxy S25 FE SM-S731N firmware
The latest stable build is S731NKSUACZJC (Android 17, feature update), first released on Nov 2, 2026 – 4 days ago. Samsung has published 18 stable builds for this model since Sep 22, 2025: 12 security and 6 feature updates, from Android 16 to Android 17. The current bootloader (binary) version is 10. A device on bit 10 only accepts firmware with bit 10 or higher – see downgrading and the bootloader bit.
- Latest build
S731NKSUACZJC- Released
- Nov 2, 2026
- Android
- Android 17
- Bootloader bit
- 10
- Regions
- 4
- Stable builds
- 18
Latest firmware by region (CSC)
Samsung builds firmware per region code (CSC). Pick the code that matches your device – it is shown under Settings › About phone › Software information › Service provider software version. Follow a code for its complete history.
| CSC | Region | Latest build | Android | Released | Builds |
|---|---|---|---|---|---|
KOO | South Korea | S731NKSUACZJC | Android 17 | Nov 2, 2026 | 23 |
KTC | South Korea (KT) | S731NKSUACZJC | Android 17 | Nov 2, 2026 | 23 |
LUC | South Korea (LG U+) | S731NKSUACZJC | Android 17 | Nov 2, 2026 | 22 |
SKC | South Korea (SKT) | S731NKSUACZJC | Android 17 | Nov 2, 2026 | 22 |
Firmware history (18 builds)
Every stable build (PDA version) Samsung has published for the SM-S731N, newest first. “” is the earliest date the build appeared on Samsung's servers in any region. “” means Samsung no longer serves the file for that build.
| Build (PDA) | Released | Android | Type | Bit | Regions | File |
|---|---|---|---|---|---|---|
S731NKSUACZJC | Nov 2, 2026 | Android 17 | Feature | 10 | 4 | on server |
S731NKSSACZJ2 | Oct 19, 2026 | Android 17 | Security | 10 | 4 | on server |
S731NKSU9CZIF | Sep 28, 2026 | Android 17 | Feature | 9 | 4 | on server |
S731NKSS9BZH2 | Aug 26, 2026 | Android 16 | Security | 9 | 4 | on server |
S731NKSS8BZG3 | Jul 9, 2026 | Android 16 | Security | 8 | 4 | on server |
S731NKSS7BZF1 | Jun 10, 2026 | Android 16 | Security | 7 | 4 | on server |
S731NKSS7BZE1 | May 21, 2026 | Android 16 | Security | 7 | 4 | on server |
S731NKSU6BZDP | May 6, 2026 | Android 16 | Feature | 6 | 4 | on server |
S731NKSS6AZCH | Apr 6, 2026 | Android 16 | Security | 6 | 4 | on server |
S731NKSS5AZC1 | Mar 19, 2026 | Android 16 | Security | 5 | 4 | on server |
S731NKSS5AZB2 | Feb 23, 2026 | Android 16 | Security | 5 | 4 | on server |
S731NKSS4AYL3 | Jan 13, 2026 | Android 16 | Security | 4 | 4 | on server |
S731NKSS3AYKG | Dec 8, 2025 | Android 16 | Security | 3 | 4 | on server |
S731NKSU3AYJ9 | Nov 17, 2025 | Android 16 | Feature | 3 | 4 | on server |
S731NKSS2AYJ1 | Oct 23, 2025 | Android 16 | Security | 2 | 4 | on server |
S731NKSS1AYID | Oct 1, 2025 | Android 16 | Security | 1 | 2 | on server |
S731NKSU1AYH9 | Sep 22, 2025 | Android 16 | Feature | 1 | 4 | on server |
S731NKSU1AYIB | Sep 22, 2025 | Android 16 | Feature | 1 | 4 | on server |
Beta and test builds
Samsung's servers also list 5 beta build(s) for this model. They are not offered to regular users and are often removed after the next stable release.
| Build | Listed | File |
|---|---|---|
S731NKSU9ZZI4 | Sep 14, 2026 | pulled |
S731NKSU9ZZHM | Sep 2, 2026 | pulled |
S731NKSU6ZZDD | Apr 20, 2026 | pulled |
S731NKSU6ZZD5 | Apr 9, 2026 | pulled |
S731NKSU5ZZCD | Mar 26, 2026 | pulled |
How to download SM-S731N firmware
We do not host firmware. Download it directly from Samsung's servers with a free open-source tool, for example samloader:
samloader download -m SM-S731N -r KOOReplace KOO with your region code. Step-by-step instructions, including a graphical alternative:
How to download Samsung firmware.