Galaxy S25 Ultra SM-S938U1 firmware

The latest stable build is S938U1UESDDZJ1 (Android 17, security update), first released on Oct 27, 2026 – 10 days ago. Samsung has published 24 stable builds for this model since Feb 3, 2025: 16 security and 8 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
S938U1UESDDZJ1
Released
Oct 27, 2026
Android
Android 17
Bootloader bit
13
Regions
14
Stable builds
24

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
ACGUSA (C Spire)S938U1UESDDZJ1Android 17Oct 27, 202636
AIOUSA (Cricket)S938U1UESDDZJ1Android 17Oct 27, 202636
ATTUSA (AT&T)S938U1UESDDZJ1Android 17Oct 27, 202636
CCTUSA (Comcast)S938U1UESDDZJ1Android 17Oct 27, 202636
DSAUSAS938U1UEUCDZIFAndroid 17Oct 6, 202636
DSHUSAS938U1UEUCDZIFAndroid 17Oct 6, 202636
LRAUSA (Bluegrass)S938U1UESDDZJ1Android 17Oct 27, 202636
TFNUSA (TracFone)S938U1UESDDZJ1Android 17Oct 27, 202636
TMBUSA (T-Mobile)S938U1UEUCDZIFAndroid 17Oct 6, 202636
TMKUSA (MetroPCS)S938U1UEUCDZIFAndroid 17Oct 6, 202636
USCUSA (US Cellular)S938U1UEUCDZIFAndroid 17Oct 6, 202636
VZWUSA (Verizon)S938U1UESDDZJ1Android 17Oct 27, 202636
XAAUSA (unlocked)S938U1UEUCDZIFAndroid 17Oct 6, 202636
XARUSA (Cellular South)S938U1UESDDZJ1Android 17Oct 27, 202636

Firmware history (24 builds)

Every stable build (PDA version) Samsung has published for the SM-S938U1, 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
S938U1UESDDZJ1Oct 27, 2026Android 17Security1314on server
S938U1UEUCDZIFOct 6, 2026Android 17Feature1214on server
S938U1UESCCZF9Sep 1, 2026Android 16Security1214on server
S938U1UESBCZF5Jul 16, 2026Android 16Security1114on server
S938U1UEUACZF1Jun 16, 2026Android 16Feature1014on server
S938U1UESACZE1May 27, 2026Android 16Security1014on server
S938U1UEU9CZDPMay 12, 2026Android 16Feature914on server
S938U1UES9BZBHApr 14, 2026Android 16Security914on server
S938U1UES8BZBBMar 25, 2026Android 16Security814on server
S938U1UES8BYLXFeb 27, 2026Android 16Security814on server
S938U1UES7BYLRJan 19, 2026Android 16Security714on server
S938U1UES7BYJ8Dec 15, 2025Android 16Security714on server
S938U1UES7BYJ5Nov 24, 2025Android 16Security714on server
S938U1UES6BYIFOct 24, 2025Android 16Security614on server
S938U1UEU5BYI3Sep 19, 2025Android 16Feature514on server
S938U1UES5AYH2Aug 22, 2025Android 15Security514on server
S938U1UES5AYE7Jul 18, 2025Android 15Security514on server
S938U1UES4AYE3Jun 12, 2025Android 15Security414on server
S938U1UES3AYDFMay 5, 2025Android 15Security314on server
S938U1UEU2AYD9Apr 23, 2025Android 15Feature214on server
S938U1UES1AYBCMar 25, 2025Android 15Security114on server
S938U1UEU1AYB3Feb 14, 2025Android 15Feature114on server
S938U1UEU1AYA1Feb 3, 2025Android 15Feature114on server
S938U1UEUDDZJB–Android 17Feature1314on server

Beta and test builds

Samsung's servers also list 12 beta build(s) for this model. They are not offered to regular users and are often removed after the next stable release.

BuildListedFile
S938U1UEUCZZI4Sep 8, 2026pulled
S938U1UEUCZZHLSep 2, 2026pulled
S938U1UEU9ZZDDApr 20, 2026pulled
S938U1UEU9ZZD5Apr 15, 2026pulled
S938U1UEU8ZZCDMar 27, 2026pulled
S938U1UEU8ZZC7Mar 12, 2026pulled
S938U1UEU8ZZAOMar 12, 2026pulled
S938U1UEU7ZZANFeb 19, 2026pulled
S938U1UEU7ZZALFeb 12, 2026pulled
S938U1UEU7ZZA3Jan 5, 2026pulled
S938U1UEU7ZYLHDec 22, 2025pulled
S938U1UEU7ZYL8Dec 8, 2025pulled

How to download SM-S938U1 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-S938U1 -r ACG

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