SM-A546U1 8 countries Android 16

Samsung Galaxy A54 5G A546U1UESNFZI2 Firmware

Samsung Galaxy A54 5G A546U1UESNFZI2 is an Android 16 firmware for 8 countries, 18 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 A546U1UESMFZH3: bootloader binary raised from M (22) to N (23), so after installing it there is no way back to older builds; security patch 2026-09-05 instead of 2026-08-05. A newer build for SM-A546U1 is available: A546U1UESNFZJ2.

OS updates guaranteed until: Android 17Security updates until: Mar 29, 2028
Download firmware
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Android 16
OS Version
2026-09-12
Build Date
2026-09-05
Security patch
8
Countries
18
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: A546U1UESNFZI2
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-A546U1
    ACG, AIO, ATT, CCT, LRA, TMB, TMK, USC, VZW, XAA, XAR United States
    ATC, CHA, DSA, DSH, FKR, TFV, XAG
    		A546U1OYMNFZI2 2026-09-29 7.197 GiB
    SM-A546U1_5_20260912060630_dwjb3ys0ca_fac.zip

    No matching downloads

    How to flash A546U1UESNFZI2

    • A546U1UESNFZI2 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 A546U1UESNFZI2

    • 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: September 2026

    SMR Sep-2026 fixes 80 vulnerabilities, 20 of them critical. Android Security Bulletin: 58, Samsung Semiconductor: 1, Samsung-specific issues (SVE): 21.

    Most severe Samsung fixes:

    • critical Heap-based buffer overflow in DNG decoder of libimagecodec.quram.so prior to SMR Sep-2026 Release 1 allows remote attackers to execute arbitrary code. (CVE-2026-21095)
    • critical Heap-based buffer overflow in JPEG decoder of libimagecodec.quram.so prior to SMR Sep-2026 Release 1 allows remote attackers to execute arbitrary code. (CVE-2026-21096)
    • high Out-of-bounds write in libmdnie.so prior to SMR Sep-2026 Release 1 allows local attackers to execute arbitrary code with system server privilege. (CVE-2026-21087)

    All fixes and Galaxy models with this patch

    Rollout of A546U1UESNFZI2 by region

    Samsung released this build in all regions (18) on the same day, September 29, 2026.

    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

    A546U1UESNFZI2 is Android 16 firmware for Samsung Galaxy A54 5G, released for 8 countries, 18 CSC codes. It includes the 2026-09-05 security patch. Samsung built it on 2026-09-12.

    SMR Sep-2026 fixes 80 vulnerabilities, 20 of them critical. Android Security Bulletin: 58, Samsung Semiconductor: 1, Samsung-specific issues (SVE): 21.

    No. A newer build for SM-A546U1 is available: A546U1UESNFZJ2. Install it instead of A546U1UESNFZI2 unless you need this exact version. The previous build was A546U1UESMFZH3.

    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 7.197 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". 1 other build of this model uses the same binary, so you can switch between them in both directions.

    Other builds and changelog for Samsung Galaxy A54 5G

    • 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...

    • Security
    The device is protected with improved security.

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

    Show 2 older builds
    One UI 7.0 Upgrade (Android 15)
    Bold new look

    Visual enhancements
    Enjoy a more sophisticated and unique look. One UI 7 introduces a stunning redesign to key components including buttons, menus, notifications and control bars, providing a more consistent visual experience with curves and circles. Beautiful new colors, soft animations, and an innovative blur effect that's unique to One UI make information hierarchy clearer and help you focus on important information.

    Reimagined Home screen
    Fr...

    • The security of your device has been improved.

    Model firmware by region