Galaxy S26 Ultra SM-S948U1 firmware

The latest stable build is S948U1UEU5BZJA (Android 17, feature update), first released on Oct 29, 2026 – 8 days ago. Samsung has published 12 stable builds for this model since Feb 26, 2026: 7 security and 5 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

S948U1UEU5BZJA

Released

Oct 29, 2026

Android

Android 17

Bootloader bit

5

Regions

14

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.

Firmware history (12 builds)

Every stable build (PDA version) Samsung has published for the SM-S948U1, 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.

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.

How to download SM-S948U1 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-S948U1 -r ACG

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