Samsung Galaxy S21 Ultra 5G G998BXXSAFXCL
SM-G998B 38 countries Android 14

Samsung Galaxy S21 Ultra 5G G998BXXSAFXCL Firmware

Samsung Galaxy S21 Ultra 5G G998BXXSAFXCL is an Android 14 firmware for 38 countries, 89 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 G998BXXS9FXC1: bootloader binary raised from 9 to A (10), so after installing it there is no way back to older builds; security patch 2024-04-01 instead of 2024-03-01. A newer build for SM-G998B is available: G998BXXUJHZF2.

OS updates guaranteed until: Android 15Security updates until: Jan 2, 2026
Download firmware
8.7/10 (474)266,949 times
Android 14
OS Version
2024-04-09
First release
other regions until 2024-04-20
2024-04-01
Security patch
38
Countries
89
CSC codes
A (10)
Bootloader binary

Bootloader binary A (10). 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.
    3
    MODEM/CP Version: G998BXXSAFXCL
    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
    		G998BOXMAFXCL 2024-04-15 2024-04-09 8.161 GiB
    SM-G998B_4_20240401172510_m2rb6ipzfh_fac.zip
    		Download
    SM-G998B
    BVO Bolivia
    COB, COL, COO Colombia
    IUS, MXO, TMM Mexico
    UPO, UYO Uruguay
    		G998BOWOAFWK2 2024-04-16 2024-04-11 7.813 GiB
    SM-G998B_4_20240404045900_dfmmjy0692_fac.zip
    		Download
    SM-G998B
    PEO, PET, PNT, SAM Peru
    		G998BOWOAFXAH 2024-04-20 2024-04-12 7.844 GiB
    SM-G998B_4_20240404050640_yxn1q009pq_fac.zip
    		Download

    No matching downloads

    How to flash G998BXXSAFXCL

    • G998BXXSAFXCL has bootloader binary A (10). Your device must run binary A (10) 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 G998BXXSAFXCL

    • The security of your device has been improved.

    Security patch: April 2024

    SMR Apr-2024 fixes 35 vulnerabilities, 1 of them critical. Android Security Bulletin: 27, Samsung-specific issues (SVE): 8.

    Most severe Samsung fixes:

    • high Out-of-bounds write vulnerability in libsavsac.so (CVE-2024-20844)
    • high Out-of-bounds write vulnerability in libsavsac.so (CVE-2024-20845)
    • high Out-of-bounds Write vulnerability in libsdffextractor (CVE-2024-20849)

    All fixes and Galaxy models with this patch

    Rollout of G998BXXSAFXCL by region

    First release
    April 9, 2024
    Last region
    April 20, 2024
    Duration
    12 days
    Regions
    89
    1. Day 1 · · 1 region
      SwitzerlandAUT
    2. Day 3 · · 6 regions
      BoliviaBVOGuatemalaGTOPanamaTPATrinidad & TobagoEONUruguayUPOUYO
    3. Day 4 · · 58 regions
      AlbaniaAVFAustriaATODREMAXBaltic EuropeSEBBulgariaBGLColombiaCOLCOOCroatiaCROCzechiaTMZVDCXEZFranceFTMXEFGermanyDBTDTMVD2GreeceCOSEURVGRHungaryTMHXEHIreland3IEVDI
      +16 more countries
      ItalyHUIITVOMNLuxembourgLUXMacedoniaMBMMexicoIUSMXONetherlandsPHNTNLVDFNordic EuropeNEEPeruPEOPETPolandOPVTPLXEOPortugalTCLTPHRomaniaCNXCOAOROROMSerbiaSEESlovakiaORSORXTMSSloveniaSIOSpainAMOATLPHEXECSwedenHTSUnited KingdomH3GO2U
    4. Day 5 · · 1 region
      ChileCHO
    5. Day 7 · · 19 regions
      AustriaMOBCroatiaVIPCzechiaO2CFranceBOGSFRIrelandMETTSIItalyTIMMontenegroTOPPolandPLSPRTPortugalMEOSerbiaMSRSloveniaMOTSIMSwitzerlandSWC
      +2 more countries
      United KingdomEVRBTBBTE
    6. Day 8 · · 3 regions
      ColombiaCOBMexicoTMMPeruSAM
    7. Day 12 · · 1 region
      PeruPNT

    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

    Frequently Asked Questions

    G998BXXSAFXCL is Android 14 firmware for Samsung Galaxy S21 Ultra 5G, released for 38 countries, 89 CSC codes. It includes the 2024-04-01 security patch. Samsung built it on 2024-04-09.

    SMR Apr-2024 fixes 35 vulnerabilities, 1 of them critical. Android Security Bulletin: 27, Samsung-specific issues (SVE): 8.

    No. A newer build for SM-G998B is available: G998BXXUJHZF2. Install it instead of G998BXXSAFXCL unless you need this exact version. The previous build was G998BXXS9FXC1.

    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 A (10) or lower.

    This build uses bootloader binary A (10). It can be flashed on a Samsung Galaxy S21 Ultra 5G running binary A (10) or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 7 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.

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

    • Security
    The device is protected with improved security.

    • The security of your device has been improved.

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    • The security of your device has been improved.

    • Security
    The device is protected with improved security.

    • 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