Galaxy S24 FE SM-S721N firmware

The latest stable build is S721NKSSFEZJ1 (Android 17, security update), first released on Oct 22, 2026 – 15 days ago. Samsung has published 27 stable builds for this model since Oct 17, 2024: 21 security and 6 feature updates, from Android 14 to Android 17. The current bootloader (binary) version is 15. A device on bit 15 only accepts firmware with bit 15 or higher – see downgrading and the bootloader bit.

Latest build
S721NKSSFEZJ1
Released
Oct 22, 2026
Android
Android 17
Bootloader bit
15
Regions
4
Stable builds
27

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 KoreaS721NKSSFEZJ1Android 17Oct 22, 202633
KTCSouth Korea (KT)S721NKSSFEZJ1Android 17Oct 22, 202633
LUCSouth Korea (LG U+)S721NKSSFEZJ1Android 17Oct 22, 202632
SKCSouth Korea (SKT)S721NKSSFEZJ1Android 17Oct 22, 202632

Firmware history (27 builds)

Every stable build (PDA version) Samsung has published for the SM-S721N, 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
S721NKSSFEZJ1Oct 22, 2026Android 17Security154on server
S721NKSUEEZIFOct 6, 2026Android 17Feature144on server
S721NKSSEDZH3Aug 26, 2026Android 16Security144on server
S721NKSSDDZG3Jul 20, 2026Android 16Security134on server
S721NKSSCDZF3Jun 18, 2026Android 16Security124on server
S721NKSSCDZE1May 28, 2026Android 16Security124on server
S721NKSUBDZDPMay 11, 2026Android 16Feature114on server
S721NKSSBCZD2Apr 8, 2026Android 16Security114on server
S721NKSSACZC1Mar 23, 2026Android 16Security104on server
S721NKSSACZB2Feb 23, 2026Android 16Security104on server
S721NKSS9CZA1Jan 15, 2026Android 16Security94on server
S721NKSS8CYL1Dec 11, 2025Android 16Security84on server
S721NKSS8CYK2Nov 17, 2025Android 16Security84on server
S721NKSS7CYJ3Oct 24, 2025Android 16Security74on server
S721NKSS6CYI9Oct 1, 2025Android 16Security62on server
S721NKSU6CYI6Sep 22, 2025Android 16Feature64on server
S721NKSS6BYG2Aug 11, 2025Android 15Security64on server
S721NKSS5BYF1Jul 10, 2025Android 15Security54on server
S721NKSS4BYE1Jun 12, 2025Android 15Security44on server
S721NKSS3BYDFMay 15, 2025Android 15Security34on server
S721NKSU2BYD9Apr 22, 2025Android 15Feature24on server
S721NKSS2AYB2Mar 13, 2025Android 14Security24on server
S721NKSS2AYA1Feb 13, 2025Android 14Security24on server
S721NKSS2AXL1Jan 9, 2025Android 14Security24on server
S721NKSS2AXK5Dec 12, 2024Android 14Security24on server
S721NKSU2AXK4Nov 25, 2024Android 14Feature24on server
S721NKSU1AXIAOct 17, 2024Android 14Feature14on server

Beta and test builds

Samsung's servers also list 6 beta build(s) for this model. They are not offered to regular users and are often removed after the next stable release.

BuildListedFile
S721NKSUEZZI4Sep 15, 2026pulled
S721NKSUEZZHKSep 4, 2026pulled
S721NKSUEZZHLSep 4, 2026pulled
S721NKSUBZZDPApr 28, 2026pulled
S721NKSUBZZD5Apr 14, 2026pulled
S721NKSUAZZCDMar 26, 2026pulled

How to download SM-S721N 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-S721N -r KOO

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