Samsung Galaxy S24 S921USQS4AXL4
SM-S921U 4 countries Android 14

Samsung Galaxy S24 S921USQS4AXL4 Firmware

Samsung Galaxy S24 S921USQS4AXL4 is an Android 14 firmware for 4 countries, 7 CSC codes. It is the same firmware configured per region and carrier (CSC). Find your country below, verify the file and download for free. Compared with the previous build S921USQS4AXL3, Android and the bootloader binary are unchanged, so you can switch between the two in both directions. A newer build for SM-S921U is available: S921USQU6EZIF.

OS updates guaranteed until: Android 21Security updates until: Jan 25, 2031
9.3/10 (333)14,665 times
Android 14
OS Version
2025-01-22
First release
other regions until 2025-02-04
2025-01-01
Security patch
4
Countries
7
CSC codes
4
Bootloader binary

Bootloader binary 4. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy S24 use bootloader binary 6 (latest: S921USQU6EZIF). If your device already runs binary 6, this build cannot be flashed.

All regional downloads

Pick your region (CSC) to download the matching firmware package.

Paste your current build number from Settings > About phone (About tablet) > Software information, or the output of *#1234#.
    MODEM/CP Version: S921USQS4AXL4
    ModelRegionCSC VersionBuild DateRelease dateSizeFile nameDownload
    SM-S921U
    AIO United States
    		S921UOYN4AXL4 2025-01-22 2025-01-22 11.068 GiB
    SM-S921U_1_20250122095610_w1mkzmmubb_fac.zip
    SM-S921U
    ATT United States
    		S921UOYN4AXL4 2025-01-22 2025-01-22 11.067 GiB
    SM-S921U_1_20250122104520_s097vfrxfy_fac.zip
    SM-S921U
    DSA
    		S921UOYN4AXL4 2025-01-22 2025-01-23 11.058 GiB
    SM-S921U_1_20250113174201_gvql61n87h_fac.zip
    SM-S921U
    DSG
    		S921UOYN4AXL4 2025-01-22 2025-01-23 11.058 GiB
    SM-S921U_1_20250113183830_4mn76x4vt2_fac.zip
    SM-S921U
    DSH
    		S921UOYN4AXL4 2025-01-22 2025-01-23 11.058 GiB
    SM-S921U_1_20250113190901_1fjfymu496_fac.zip
    SM-S921U
    USC United States
    		S921UOYN4AXL4 2025-02-04 2025-02-04 11.058 GiB
    SM-S921U_1_20250113193920_bnxbfaa1ne_fac.zip
    SM-S921U
    VZW United States
    		S921UOYN4AXL4 2025-01-22 2025-01-22 11.122 GiB
    SM-S921U_1_20250114074140_o986qwf1g3_fac.zip

    No matching downloads

    How to flash S921USQS4AXL4

    • S921USQS4AXL4 has bootloader binary 4. Your device must run binary 4 or lower: it is the 5th character from the end of your current build number.
    • CSC: Use CSC for a clean install, to change the region (CSC code), to downgrade or to repair a device that does not boot.
    • HOME_CSC: Use HOME_CSC to update the same model and region while keeping your data. Back up anyway: a failed update can still require a reset.
    • The Download Mode key combo depends on the model: see all combos.
    Full flashing guide
    Beware: Manually flashing firmwares may brick your device. Use it at your own risk and follow our tutorial steps.

    What's new in S921USQS4AXL4

    • Security
    The device is protected with improved security.

    Security patch: January 2025

    SMR Jan-2025 fixes 40 vulnerabilities, 5 of them critical. Android Security Bulletin: 27, Samsung-specific issues (SVE): 13.

    Most severe Samsung fixes:

    • high Out-of-bounds write in libsthmbc.so (CVE-2025-20881)
    • high Out-of-bounds write in libsthmbc.so (CVE-2025-20882)
    • high Improper access control in SoundPicker (CVE-2025-20883)

    All fixes and Galaxy models with this patch

    Rollout of S921USQS4AXL4 by region

    First release
    January 22, 2025
    Last region
    February 4, 2025
    Duration
    14 days
    Regions
    7
    1. Day 1 · · 3 regions
      United StatesAIOATTVZW
    2. Day 2 · · 3 regions
      DSADSGDSH
    3. Day 14 · · 1 region
      United StatesUSC

    Device specifications

    • Launched withAndroid 14
    • Display diagonal15.8 cm (6.2")
    • Display resolution2340 x 1080 pixels
    • RAM8 GB
    • RAM typeLPDDR5X
    • Rear camera resolution50 MP
    • Rear camera typeTriple camera
    • Battery capacity4000 mAh
    • Weight167 g

    Specifications of SM-S921B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    S921USQS4AXL4 is Android 14 firmware for Samsung Galaxy S24, released for 4 countries, 7 CSC codes. It includes the 2025-01-01 security patch. Samsung built it on 2025-01-22.

    SMR Jan-2025 fixes 40 vulnerabilities, 5 of them critical. Android Security Bulletin: 27, Samsung-specific issues (SVE): 13.

    No. A newer build for SM-S921U is available: S921USQU6EZIF. Install it instead of S921USQS4AXL4 unless you need this exact version. The previous build was S921USQS4AXL3.

    Download the package for your region (CSC) and unzip it. In Odin, load each file into the slot with the same name: BL, AP, CP (if the package has one) and CSC, or HOME_CSC to keep your data. Odin checks the built-in checksum of every .tar.md5 file before flashing. The Samsung Galaxy S24 must be on bootloader binary 4 or lower.

    This build uses bootloader binary 4. It can be flashed on a Samsung Galaxy S24 running binary 4 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 24 other builds of this model use the same binary, so you can switch between them in both directions.

    Other builds and changelog for Samsung Galaxy S24

    One UI 9
    Galaxy AI

    Enhanced Now nudge
    Now nudge provides helpful suggestions in more places throughout your Galaxy experience. In addition to the keyboard, suggestions will now appear in conversation notifications and in a floating button in the bottom right corner of the screen. There are also several new types of suggestions, like addresses or saving places in Google Maps.

    Focus on someone important
    My FanCam lets you select a person in a video and follow them automatically while cropping...

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    One UI 8.5
    Visual design

    Fresh new look
    One UI seamlessly integrates into your daily routine by combining immersive visuals with meaningful personalization for a more refined and sophisticated design. Transparent blur effects add depth and make content easier to navigate, while floating elements react organically to your workflow for a more focused experience. Through familiar and intuitive data visualization, One UI delivers a design that feels both personal and relatable, helping you focus...

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    One UI 8.0 (Android 16)
    Galaxy AI

    See calls on the screen
    Call captions show what each person says on the screen in real time during calls. Follow the conversation on your screen to make sure you don’t miss anything.

    Create unique pet portraits
    Bring out your pet's personality with Portrait studio. You can now apply portrait effects to pictures of dogs and cats in addition to people. Choose from styles like Fisheye lens, oil painting, and more.

    Clean up sound
    Use Audio eraser to automatica...

    Show 5 older builds

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security

    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security
    The device is protected with improved security.

    Model firmware by region