Galaxy S25 SM-S931N firmware

The latest stable build is S931NKSUDDZJB (Android 17, feature update), first released on Nov 2, 2026 – 4 days ago. Samsung has published 25 stable builds for this model since Feb 4, 2025: 16 security and 9 feature updates, from Android 15 to Android 17. The current bootloader (binary) version is 13. A device on bit 13 only accepts firmware with bit 13 or higher – see downgrading and the bootloader bit.

Latest build
S931NKSUDDZJB
Released
Nov 2, 2026
Android
Android 17
Bootloader bit
13
Regions
4
Stable builds
25

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.

CSCRegionLatest buildAndroidReleasedBuilds
KOOSouth KoreaS931NKSUDDZJBAndroid 17Nov 2, 202645
KTCSouth Korea (KT)S931NKSUDDZJBAndroid 17Nov 2, 202645
LUCSouth Korea (LG U+)S931NKSUDDZJBAndroid 17Nov 2, 202644
SKCSouth Korea (SKT)S931NKSUDDZJBAndroid 17Nov 2, 202644

Firmware history (25 builds)

Every stable build (PDA version) Samsung has published for the SM-S931N, 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)ReleasedAndroidTypeBitRegionsFile
S931NKSUDDZJBNov 2, 2026Android 17Feature134on server
S931NKSSDDZJ2Oct 19, 2026Android 17Security134on server
S931NKSUCDZIFSep 28, 2026Android 17Feature124on server
S931NKSSCCZH2Aug 26, 2026Android 16Security124on server
S931NKSSBCZG3Jul 9, 2026Android 16Security114on server
S931NKSUACZF1Jun 11, 2026Android 16Feature104on server
S931NKSSACZE1May 21, 2026Android 16Security104on server
S931NKSU9CZDPMay 6, 2026Android 16Feature94on server
S931NKSS9BZCHApr 6, 2026Android 16Security94on server
S931NKSS8BZC1Mar 19, 2026Android 16Security84on server
S931NKSS8BZB2Feb 23, 2026Android 16Security84on server
S931NKSS7BYLRJan 13, 2026Android 16Security74on server
S931NKSS7BYKGDec 8, 2025Android 16Security74on server
S931NKSS7BYK5Nov 17, 2025Android 16Security74on server
S931NKSS6BYJ2Oct 30, 2025Android 16Security64on server
S931NKSS5BYI9Oct 1, 2025Android 16Security52on server
S931NKSU5BYI3Sep 15, 2025Android 16Feature54on server
S931NKSS5AYG6Aug 7, 2025Android 15Security54on server
S931NKSS5AYF6Jul 10, 2025Android 15Security54on server
S931NKSS4AYE5Jun 10, 2025Android 15Security44on server
S931NKSS3AYDFMay 8, 2025Android 15Security34on server
S931NKSU2AYD9Apr 16, 2025Android 15Feature24on server
S931NKSU1AYC3Mar 20, 2025Android 15Feature14on server
S931NKSU1AYB3Feb 13, 2025Android 15Feature14on server
S931NKSU1AYA2Feb 4, 2025Android 15Feature14on server

Beta and test builds

Samsung's servers also list 20 beta build(s) for this model. They are not offered to regular users and are often removed after the next stable release.

BuildListedFile
S931NKSUCZZIDSep 18, 2026pulled
S931NKSUCZZI4Sep 14, 2026pulled
S931NKSUCZZHLSep 2, 2026pulled
S931NKSU9ZZDDApr 20, 2026pulled
S931NKSU9ZZD5Apr 9, 2026pulled
S931NKSU8ZZCDMar 26, 2026pulled
S931NKSU8ZZC7Mar 12, 2026pulled
S931NKSU8ZZAOFeb 26, 2026pulled
S931NKSU7ZZANFeb 19, 2026pulled
S931NKSU7ZZALFeb 10, 2026pulled
S931NKSU7ZZA3Jan 5, 2026pulled
S931NKSU7ZYLHDec 22, 2025pulled
S931NKSU7ZYL8Dec 8, 2025pulled
S931NKSU5ZYI3Sep 8, 2025pulled
S931NKSU5ZYHBAug 29, 2025pulled
S931NKSU5ZYH6Aug 19, 2025pulled
S931NKSU5ZYGBJul 30, 2025pulled
S931NKSU4ZYFAJun 30, 2025pulled
S931NKSU4ZYF3Jun 12, 2025pulled
S931NKSU3ZYERMay 28, 2025pulled

How to download SM-S931N 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-S931N -r KOO

Replace KOO with your region code. Step-by-step instructions, including a graphical alternative: How to download Samsung firmware.