Galaxy S24 SM-S921U firmware

The latest stable build is S921USQS6EZJ1 (Android 17, security update), first released on Oct 27, 2026 – 10 days ago. Samsung has published 53 stable builds for this model since Jan 18, 2024: 39 security and 14 feature updates, from Android 14 to Android 17. The current bootloader (binary) version is 6. A device on bit 6 only accepts firmware with bit 6 or higher – see downgrading and the bootloader bit.

Latest build
S921USQS6EZJ1
Released
Oct 27, 2026
Android
Android 17
Bootloader bit
6
Regions
10
Stable builds
53

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)S921USQS6EZJ1Android 17Oct 27, 202643
ATTUSA (AT&T)S921USQS6EZJ1Android 17Oct 27, 202643
CCTUSA (Comcast)S921USQS6EZJ1Android 17Oct 29, 202645
DSAUSAS921USQU6EZIFAndroid 17Oct 15, 202642
DSHUSAS921USQU6EZIFAndroid 17Oct 15, 202642
TMBUSA (T-Mobile)S921USQU6EZIFAndroid 17Oct 12, 202643
TMKUSA (MetroPCS)S921USQU6EZIFAndroid 17Oct 12, 202643
USCUSA (US Cellular)S921USQU6EZIFAndroid 17Oct 12, 202643
VZWUSA (Verizon)S921USQS6EZJ1Android 17Oct 29, 202642
XAAUSA (unlocked)S921USQS6EZJ1Android 17Oct 29, 202616

Firmware history (53 builds)

Every stable build (PDA version) Samsung has published for the SM-S921U, 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
S921USQS6EZJ1Oct 27, 2026Android 17Security65on server
S921USQU6EZIFOct 12, 2026Android 17Feature610on server
S921USQS6DZI1Sep 30, 2026Android 16Security610on server
S921USQS6DZH3Sep 1, 2026Android 16Security610on server
S921USQS6DZG1Jul 23, 2026Android 16Security610on server
S921USQS6DZF2Jun 24, 2026Android 16Security610on server
S921USQS6DZE2Jun 2, 2026Android 16Security610on server
S921USQU5DZDRMay 18, 2026Android 16Feature510on server
S921USQS5CZD2Apr 15, 2026Android 16Security510on server
S921USQS5CZC1Mar 26, 2026Android 16Security510on server
S921USQS5CZB2Mar 5, 2026Android 16Security510on server
S921USQS4CZA1Jan 21, 2026Android 16Security410on server
S921USQS4CYL1Dec 18, 2025Android 16Security410on server
S921USQS4CYK2Nov 20, 2025Android 16Security410on server
S921USQS4CYJ1Oct 29, 2025Android 16Security410on server
S921USQU4CYI9Sep 25, 2025Android 16Feature410on server
S921USQS4BYG2Aug 13, 2025Android 15Security49on server
S921USQS4BYF5Jul 17, 2025Android 15Security49on server
S921USQS4BYF2Jun 23, 2025Android 15Security49on server
S921USQS4BYE4May 19, 2025Android 15Security49on server
S921USQU4BYD9Apr 23, 2025Android 15Feature49on server
S921USQU4BYCHApr 11, 2025Android 15Feature44on server
S921USQS4AYB5Mar 13, 2025Android 14Security42on server
S921USQS4AYB3Mar 13, 2025Android 14Security47on server
S921USQS4AYA2Feb 13, 2025Android 14Security48on server
S921USQS4AYA1Feb 12, 2025Android 14Security49on server
S921USQS4AXL5Jan 22, 2025Android 14Security49on server
S921USQS4AXL4Jan 22, 2025Android 14Security49on server
S921USQS4AXL3Jan 9, 2025Android 14Security49on server
S921USQS4AXL2Jan 7, 2025Android 14Security48on server
S921USQU4AXL1Dec 16, 2024Android 14Feature49on server
S921USQS4AXKDDec 9, 2024Android 14Security49on server
S921USQU4AXK5Nov 26, 2024Android 14Feature42on server
S921USQU4AXK4Nov 25, 2024Android 14Feature49on server
S921USQS4AXJBNov 4, 2024Android 14Security42on server
S921USQS4AXJANov 4, 2024Android 14Security47on server
S921USQS3AXI2Oct 10, 2024Android 14Security32on server
S921USQS3AXI1Oct 9, 2024Android 14Security37on server
S921USQS3AXHGSep 26, 2024Android 14Security32on server
S921USQS3AXHFSep 25, 2024Android 14Security37on server
S921USQU3AXHBSep 10, 2024Android 14Feature32on server
S921USQU3AXH7Sep 9, 2024Android 14Feature37on server
S921USQS3AXFIAug 8, 2024Android 14Security32on server
S921USQS3AXFJAug 7, 2024Android 14Security37on server
S921USQS3AXFDJul 15, 2024Android 14Security32on server
S921USQS3AXFCJul 15, 2024Android 14Security37on server
S921USQU2AXE5Jun 19, 2024Android 14Feature22on server
S921USQS2AXE4Jun 10, 2024Android 14Security27on server
S921USQS2AXD3May 7, 2024Android 14Security29on server
S921USQU1AXCBMar 27, 2024Android 14Feature19on server
S921USQS1AXBGMar 1, 2024Android 14Security19on server
S921USQU1AXB7Feb 23, 2024Android 14Feature19on server
S921USQU1AWM9Jan 18, 2024Android 14Feature19on server

How to download SM-S921U 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-S921U -r AIO

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