Samsung Galaxy A54 5G A546USQSNFZJ2
SM-A546U 4 countries Android 16

Samsung Galaxy A54 5G A546USQSNFZJ2 Firmware

Samsung Galaxy A54 5G A546USQSNFZJ2 is an Android 16 firmware for 4 countries, 8 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 A546USQSNFZI2: security patch 2026-10-05 instead of 2026-09-05. A newer build for SM-A546U is available: A546USQUNGZJ6.

OS updates guaranteed until: Android 17Security updates until: Mar 3, 2028
Download firmware
9.1/10 (26)897 times
Android 16
OS Version
2026-10-10
Build Date
2026-10-05
Security patch
4
Countries
8
CSC codes
N (23)
Bootloader binary

Bootloader binary N (23). Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

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: A546USQSNFZJ2
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-A546U
    AIO, ATT, CCT, TMB, TMK United States
    CHA, DSA, DSH
    		A546UOYNNFZJ2 2026-10-19 7.571 GiB
    SM-A546U_5_20261010141450_ehqah1637w_fac.zip
    		Download

    No matching downloads

    How to flash A546USQSNFZJ2

    • A546USQSNFZJ2 has bootloader binary N (23). Your device must run binary N (23) 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 A546USQSNFZJ2

    • 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 patch: October 2026

    SMR Oct-2026 fixes 62 vulnerabilities, 9 of them critical. Android Security Bulletin: 45, Samsung Semiconductor: 4, Samsung-specific issues (SVE): 13.

    Most severe Samsung fixes:

    • high Out-of-bounds write in libsmkvextractor.so prior to SMR Oct-2026 Release 1 allows local attackers to execute arbitrary code. (CVE-2026-21114)
    • high Use after free in WSM service prior to SMR Oct-2026 Release 1 allows local attackers to potentially execute arbitrary code with system privilege. (CVE-2026-21120)
    • high Out-of-bounds write in libsamsungtts.so prior to SMR Oct-2026 Release 1 allows local attackers to execute arbitrary code. (CVE-2026-21122)

    All fixes and Galaxy models with this patch

    Rollout of A546USQSNFZJ2 by region

    First release
    October 19, 2026
    Last region
    October 20, 2026
    Duration
    2 days
    Regions
    8
    1. Day 1 · · 2 regions
      United StatesAIOATT
    2. Day 2 · · 6 regions
      United StatesCCTTMBTMKCHADSADSH

    Device specifications

    • Launched withAndroid 13
    • Display diagonal16.3 cm (6.4")
    • Display resolution1080 x 2340 pixels
    • RAM8 GB
    • Rear camera resolution50 MP
    • Rear camera typeTriple camera
    • Battery capacity5000 mAh
    • Weight202 g

    Specifications of SM-A546B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    A546USQSNFZJ2 is Android 16 firmware for Samsung Galaxy A54 5G, released for 4 countries, 8 CSC codes. It includes the 2026-10-05 security patch. Samsung built it on 2026-10-10.

    SMR Oct-2026 fixes 62 vulnerabilities, 9 of them critical. Android Security Bulletin: 45, Samsung Semiconductor: 4, Samsung-specific issues (SVE): 13.

    No. A newer build for SM-A546U is available: A546USQUNGZJ6. Install it instead of A546USQSNFZJ2 unless you need this exact version. The previous build was A546USQSNFZI2.

    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 download is 7.571 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy A54 5G must be on bootloader binary N (23) or lower.

    This build uses bootloader binary N (23). It can be flashed on a Samsung Galaxy A54 5G running binary N (23) or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 2 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 A54 5G

    No changelog details available.

    • 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)
    Productivity

    Check stock prices without unlocking
    Stocks you follow on Google Finance with big price changes will appear on your Now bar at the end of the trading day.

    Easier file sharing with Quick Share
    It's never been easier to send and receive files. Tap the Quick Share button in quick settings to get started. You can receive files while the Quick Share screen is open and send files to others directly from Quick Share.

    Sticky notes
    Add quick annotations on top o...

    Show 4 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.

    Model firmware by region