Galaxy S26 Ultra SM-S948N firmware

The latest stable build is S948NKSU5BZJB (Android 17, feature update), first released on Oct 26, 2026 – 11 days ago. Samsung has published 12 stable builds for this model since Feb 26, 2026: 6 security and 6 feature updates, from Android 16 to Android 17. The current bootloader (binary) version is 5. A device on bit 5 only accepts firmware with bit 5 or higher – see downgrading and the bootloader bit.

Latest build
S948NKSU5BZJB
Released
Oct 26, 2026
Android
Android 17
Bootloader bit
5
Regions
4
Stable builds
12

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 KoreaS948NKSU5BZJBAndroid 17Oct 26, 202620
KTCSouth Korea (KT)S948NKSU5BZJBAndroid 17Oct 26, 202620
LUCSouth Korea (LG U+)S948NKSU5BZJBAndroid 17Oct 26, 202620
SKCSouth Korea (SKT)S948NKSU5BZJBAndroid 17Oct 26, 202620

Firmware history (12 builds)

Every stable build (PDA version) Samsung has published for the SM-S948N, 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
S948NKSU5BZJBOct 26, 2026Android 17Feature54on server
S948NKSS4BZIGSep 30, 2026Android 17Security44on server
S948NKSU4BZI6Sep 16, 2026Android 17Feature44on server
S948NKSU4AZHJAug 26, 2026Android 16Feature44on server
S948NKSS4AZG3Jul 9, 2026Android 16Security44on server
S948NKSS3AZF1Jun 10, 2026Android 16Security34on server
S948NKSS2AZE1May 21, 2026Android 16Security24on server
S948NKSU2AZDEApr 29, 2026Android 16Feature24on server
S948NKSS2AZCLApr 1, 2026Android 16Security24on server
S948NKSU1AZCFMar 23, 2026Android 16Feature14on server
S948NKSS1AZC7Mar 9, 2026Android 16Security14on server
S948NKSU1AZABFeb 26, 2026Android 16Feature14on server

Beta and test builds

Samsung's servers also list 8 beta build(s) for this model. They are not offered to regular users and are often removed after the next stable release.

BuildListedFile
S948NKSU4ZZHKSep 17, 2026pulled
S948NKSU4ZZHMSep 17, 2026pulled
S948NKSU4ZZHEAug 25, 2026pulled
S948NKSU4ZZH6Aug 13, 2026pulled
S948NKSU4ZZG4Jul 15, 2026pulled
S948NKSU3ZZF7Jun 19, 2026pulled
S948NKSU2ZZEQMay 27, 2026pulled
S948NKSU2ZZEFMay 14, 2026pulled

How to download SM-S948N 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-S948N -r KOO

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