Samsung Galaxy S21 Ultra 5G G998BXXS9FWKB
SM-G998B 36 countries Android 14

Samsung Galaxy S21 Ultra 5G G998BXXS9FWKB Firmware

Samsung Galaxy S21 Ultra 5G G998BXXS9FWKB is an Android 14 firmware for 36 countries, 82 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 G998BXXU9FWK5: security patch 2023-12-01 instead of 2023-11-01. A newer build for SM-G998B is available: G998BXXUJHZF2.

OS updates guaranteed until: Android 15Security updates until: Jan 23, 2026
8.8/10 (454)270,283 times
Android 14
OS Version
2023-12-14
First release
other regions until 2024-01-23
2023-12-01
Security patch
36
Countries
82
CSC codes
9
Bootloader binary

Bootloader binary 9. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy S21 Ultra 5G use bootloader binary J (19) (latest: G998BXXUJHZF2). If your device already runs binary J (19), 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#.
    Your CSC is in Settings → About phone (About tablet) → Software information, or dial *#1234#. The CSC sets your region's features and network bands. Download the firmware for your country.
    2
    MODEM/CP Version: G998BXXU9FWK2
    ModelRegionCSC VersionBuild DateRelease dateSizeFile nameDownload
    SM-G998B
    3IE, MET, TSI, VDI Ireland
    AMO, ATL, PHE, XEC Spain
    ATO, DRE, MAX, MOB Austria
    AUT, SWC Switzerland
    +28 more countries
    AVF Albania
    BGL Bulgaria
    BOG, FTM, SFR, XEF France
    CHO Chile
    CNX, COA, ORO, ROM Romania
    COS, EUR, VGR Greece
    CRO, VIP Croatia
    DBT, DTM, VD2 Germany
    EON Trinidad & Tobago
    EVR, H3G, O2U United Kingdom
    GTO Guatemala
    HTS Sweden
    HUI, ITV, OMN, TIM Italy
    LUX Luxembourg
    MBM Macedonia
    MEO, TCL, TPH Portugal
    MOT, SIM, SIO Slovenia
    MSR, SEE Serbia
    NEE Nordic Europe
    O2C, TMZ, VDC, XEZ Czechia
    OPV, PLS, PRT, TPL, XEO Poland
    ORS, ORX, TMS Slovakia
    PHN, TNL, VDF Netherlands
    SEB Baltic Europe
    TMH, XEH Hungary
    TOP Montenegro
    TPA Panama
    BTB, BTE
    		G998BOXM9FWK2 2023-12-30 2023-12-14 8.161 GiB
    SM-G998B_4_20231202015610_wcmsmyyo31_fac.zip
    SM-G998B
    BVO Bolivia
    IUS, MXO, TMM Mexico
    UPO, UYO Uruguay
    		G998BOWO9FWK2 2024-01-23 2023-12-21 7.813 GiB
    SM-G998B_4_20231202030740_7ow6vct865_fac.zip

    No matching downloads

    Device specifications

    • Launched withAndroid 11
    • Display diagonal17.3 cm (6.8")
    • Display resolution3200 x 1440 pixels
    • Display typeDynamic AMOLED 2X
    • Processor frequency2.9 GHz
    • Processor familySamsung Exynos
    • RAM12 GB
    • Rear camera resolution108 MP
    • Rear camera typeQuad camera
    • SIM cardsDual SIM
    • Battery capacity5000 mAh
    • Weight228 g

    What's new in G998BXXS9FWKB

    • The security of your device has been improved.

    How to flash G998BXXS9FWKB

    • G998BXXS9FWKB has bootloader binary 9. Your device must run binary 9 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.

    Frequently Asked Questions

    G998BXXS9FWKB is Android 14 firmware for Samsung Galaxy S21 Ultra 5G, released for 36 countries, 82 CSC codes. It includes the 2023-12-01 security patch. Samsung built it on 2023-12-14.

    No. A newer build for SM-G998B is available: G998BXXUJHZF2. Install it instead of G998BXXS9FWKB unless you need this exact version. The previous build was G998BXXU9FWK5.

    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 S21 Ultra 5G must be on bootloader binary 9 or lower.

    This build uses bootloader binary 9. It can be flashed on a Samsung Galaxy S21 Ultra 5G running binary 9 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 43 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 S21 Ultra 5G

    • Stability and reliability
    Device behavior has been improved.

    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.

    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.

    · Device stability improvements, bug fixes.
    · New and / or enhanced features.
    · Further improvements to performance.

    Show 15 older builds

    • Security
    The device is protected with improved security.

    • The security of your device has been improved.

    • The security of your device has been improved.

    One UI 7.0 Upgrade (Android 15)
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    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.

    One UI 6.1 Upgrade
    Circle to Search

    Instantly search for anything on your screen
    Circle to Search with Google lets you easily learn more about anything shown on your screen without switching apps. Just touch and hold the Home button or navigation handle, then circle anything on the screen to start a Google search.

    Create epic images

    Effortlessly enhance your photos
    Get special AI recommendations for enhancing your photos and videos. You'll find options for adding star trails, colorizing,...

    • The security of your device has been improved.

    • The security of your device has been improved.

    • The security of your device has been improved.

    • The security of your device has been improved.

    • The security of your device has been improved.

    • Security
    The device is protected with improved security.

    • The security of your device has been improved.

    • The security of your device has been improved.

    • Stability and reliability
    Device behavior has been improved.
    • Security
    The device is protected with improved security.

    Model firmware by region