Galaxy S23 Ultra SM-S918U1 firmware

The latest stable build is S918U1UEU8GZIF (Android 17, feature update), first released on Oct 26, 2026 – 11 days ago. Samsung has published 52 stable builds for this model since Feb 14, 2023: 36 security and 16 feature updates, from Android 13 to Android 17. The current bootloader (binary) version is 8. A device on bit 8 only accepts firmware with bit 8 or higher – see downgrading and the bootloader bit.

Latest build
S918U1UEU8GZIF
Released
Oct 26, 2026
Android
Android 17
Bootloader bit
8
Regions
14
Stable builds
52

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)S918U1UEU8GZIFAndroid 17Oct 26, 202655
AIOUSA (Cricket)S918U1UEU8GZIFAndroid 17Oct 26, 202655
ATTUSA (AT&T)S918U1UEU8GZIFAndroid 17Oct 26, 202655
CCTUSA (Comcast)S918U1UEU8GZIFAndroid 17Oct 26, 202655
DSAUSAS918U1UEU8GZIFAndroid 17Oct 26, 202655
DSHUSAS918U1UEU8GZIFAndroid 17Oct 26, 202655
LRAUSA (Bluegrass)S918U1UEU8GZIFAndroid 17Oct 26, 202655
TFNUSA (TracFone)S918U1UEU8GZIFAndroid 17Oct 26, 202655
TMBUSA (T-Mobile)S918U1UEU8GZIFAndroid 17Oct 26, 202655
TMKUSA (MetroPCS)S918U1UEU8GZIFAndroid 17Oct 26, 202655
USCUSA (US Cellular)S918U1UEU8GZIFAndroid 17Oct 26, 202655
VZWUSA (Verizon)S918U1UEU8GZIFAndroid 17Oct 26, 202655
XAAUSA (unlocked)S918U1UEU8GZIFAndroid 17Oct 26, 202655
XARUSA (Cellular South)S918U1UEU8GZIFAndroid 17Oct 26, 202655

Firmware history (52 builds)

Every stable build (PDA version) Samsung has published for the SM-S918U1, 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
S918U1UEU8GZIFOct 26, 2026Android 17Feature814on server
S918U1UES8FZI1Sep 28, 2026Android 16Security814on server
S918U1UES8FZH3Sep 2, 2026Android 16Security814on server
S918U1UES8FZG1Aug 3, 2026Android 16Security814on server
S918U1UES8FZF5Jun 30, 2026Android 16Security814on server
S918U1UES7FZE3Jun 2, 2026Android 16Security714on server
S918U1UEU7FZE2May 28, 2026Android 16Feature714on server
S918U1UES7EZCIApr 21, 2026Android 16Security714on server
S918U1UES7EZC1Apr 6, 2026Android 16Security714on server
S918U1UES7EZB6Mar 5, 2026Android 16Security714on server
S918U1UES6EZA1Jan 29, 2026Android 16Security614on server
S918U1UES6EYK5Dec 22, 2025Android 16Security614on server
S918U1UES6EYK3Nov 24, 2025Android 16Security614on server
S918U1UES6EYJ5Oct 31, 2025Android 16Security614on server
S918U1UEU6EYI5Oct 6, 2025Android 16Feature614on server
S918U1UES6DYI3Sep 15, 2025Android 15Security614on server
S918U1UES6DYG5Aug 25, 2025Android 15Security614on server
S918U1UES6DYG1Jul 28, 2025Android 15Security614on server
S918U1UES6DYF3Jun 25, 2025Android 15Security614on server
S918U1UES6DYDBMay 28, 2025Android 15Security614on server
S918U1UEU6DYD9Apr 29, 2025Android 15Feature614on server
S918U1UES6CYB3Mar 11, 2025Android 14Security614on server
S918U1UEU5CYB1Feb 20, 2025Android 14Feature514on server
S918U1UES5CXL7Jan 21, 2025Android 14Security514on server
S918U1UES5CXJXDec 17, 2024Android 14Security514on server
S918U1UEU5CXJRDec 2, 2024Android 14Feature514on server
S918U1UES5CXI8Nov 6, 2024Android 14Security514on server
S918U1UES4CXI4Oct 18, 2024Android 14Security414on server
S918U1UEU4CXI1Oct 1, 2024Android 14Feature414on server
S918U1UEU4CXH7Sep 16, 2024Android 14Feature414on server
S918U1UES4CXG8Aug 7, 2024Android 14Security414on server
S918U1UES4CXE9Jul 16, 2024Android 14Security414on server
S918U1UES3CXE3Jun 11, 2024Android 14Security314on server
S918U1UES3CXD7May 17, 2024Android 14Security314on server
S918U1UES2CXCNApr 11, 2024Android 14Security214on server
S918U1UEU2CXCGMar 29, 2024Android 14Feature214on server
S918U1UES2BXBDMar 11, 2024Android 14Security214on server
S918U1UES2BXADFeb 8, 2024Android 14Security214on server
S918U1UES2BWL9Jan 12, 2024Android 14Security214on server
S918U1UES2BWKADec 7, 2023Android 14Security214on server
S918U1UEU1BWK4Nov 10, 2023Android 14Feature114on server
S918U1UES1AWIFOct 13, 2023Android 13Security114on server
S918U1UES1AWHDSep 8, 2023Android 13Security114on server
S918U1UEU1AWGHAug 16, 2023Android 13Feature114on server
S918U1UES1AWFDJul 4, 2023Android 13Security114on server
S918U1UEU1AWF3Jun 27, 2023Android 13Feature114on server
S918U1UES1AWC9May 9, 2023Android 13Security114on server
S918U1UEU1AWC8Apr 10, 2023Android 13Feature114on server
S918U1UES1AWBMMar 16, 2023Android 13Security114on server
S918U1UEU1AWBEFeb 24, 2023Android 13Feature114on server
S918U1UEU1AVKTFeb 14, 2023Android 13Feature114on server
S918U1UEU1AWA6Feb 14, 2023Android 13Feature114on server

Beta and test builds

Samsung's servers also list 3 beta build(s) for this model. They are not offered to regular users and are often removed after the next stable release.

BuildListedFile
S918U1UEU8ZZI8Sep 17, 2026pulled
S918U1UEU7ZZDPApr 28, 2026pulled
S918U1UEU7ZZD5Apr 12, 2026pulled

How to download SM-S918U1 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-S918U1 -r ACG

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