Galaxy S25 SM-S931U firmware

The latest stable build is S931USQSDDZJ1 (Android 17, security update), first released on Oct 23, 2026 – 14 days ago. Samsung has published 28 stable builds for this model since Jan 23, 2025: 19 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
S931USQSDDZJ1
Released
Oct 23, 2026
Android
Android 17
Bootloader bit
13
Regions
10
Stable builds
28

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
AIOUSA (Cricket)S931USQSDDZJ1Android 17Oct 23, 202624
ATTUSA (AT&T)S931USQSDDZJ1Android 17Oct 23, 202625
CCTUSA (Comcast)S931USQSDDZJ1Android 17Oct 23, 202625
DSAUSAS931USQUCDZIFAndroid 17Oct 7, 202625
DSHUSAS931USQUCDZIFAndroid 17Oct 7, 202625
TMBUSA (T-Mobile)S931USQUCDZIFAndroid 17Oct 5, 202635
TMKUSA (MetroPCS)S931USQUCDZIFAndroid 17Oct 5, 202625
USCUSA (US Cellular)S931USQUCDZIFAndroid 17Oct 5, 202625
VZWUSA (Verizon)S931USQSDDZJ1Android 17Oct 23, 202625
XAAUSA (unlocked)S931USQSDDZJ1Android 17Oct 30, 202618

Firmware history (28 builds)

Every stable build (PDA version) Samsung has published for the SM-S931U, 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
S931USQSDDZJ1Oct 23, 2026Android 17Security1310on server
S931USQUCDZIFOct 5, 2026Android 17Feature1210on server
S931USQSCCZF9Sep 1, 2026Android 16Security1210on server
S931USQSBCZF5Jul 15, 2026Android 16Security1110on server
S931USQUACZF1Jun 15, 2026Android 16Feature1010on server
S931USQSACZE1May 27, 2026Android 16Security1010on server
S931USQU9CZDPMay 11, 2026Android 16Feature910on server
S931USQS9BZCLApr 28, 2026Android 16Security910on server
S931USQS9BZBHApr 14, 2026Android 16Security99on server
S931USQS8BZBBMar 24, 2026Android 16Security810on server
S931USQS8BYLXFeb 26, 2026Android 16Security810on server
S931USQS7BYLRJan 19, 2026Android 16Security710on server
S931USQS7BYJ9Dec 12, 2025Android 16Security710on server
S931USQS7BYJ5Nov 21, 2025Android 16Security710on server
S931USQS6BYIFOct 22, 2025Android 16Security610on server
S931USQU5BYI3Sep 18, 2025Android 16Feature510on server
S931USQS5AYH2Aug 20, 2025Android 15Security510on server
S931USQS5AYE7Jul 17, 2025Android 15Security59on server
S931USQS4AYE3Jun 13, 2025Android 15Security47on server
S931USQS4AYE4Jun 12, 2025Android 15Security42on server
S931USQS3AYDGMay 5, 2025Android 15Security32on server
S931USQS3AYDFMay 2, 2025Android 15Security37on server
S931USQU2AYDBApr 23, 2025Android 15Feature22on server
S931USQU2AYD9Apr 21, 2025Android 15Feature27on server
S931USQS1AYBCMar 21, 2025Android 15Security19on server
S931USQU1AYB3Feb 14, 2025Android 15Feature19on server
S931USQU1AYA1Jan 23, 2025Android 15Feature19on server
S931USQUDDZJB–Android 17Feature1310on server

Beta and test builds

Samsung's servers also list 10 beta build(s) for this model. They are not offered to regular users and are often removed after the next stable release.

BuildListedFile
S931USQU9ZZDDApr 20, 2026pulled
S931USQU9ZZD5Apr 15, 2026pulled
S931USQU8ZZCDMar 27, 2026pulled
S931USQU8ZZC7Mar 12, 2026pulled
S931USQU8ZZAOFeb 27, 2026pulled
S931USQU7ZZANFeb 19, 2026pulled
S931USQU7ZZALFeb 12, 2026pulled
S931USQU7ZZA3Jan 5, 2026pulled
S931USQU7ZYLHDec 22, 2025pulled
S931USQU7ZYL8Dec 8, 2025pulled

How to download SM-S931U 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-S931U -r AIO

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