Samsung Galaxy Z Flip4 F721BXXSCIZE1
SM-F721B 58 countries Android 16

Samsung Galaxy Z Flip4 F721BXXSCIZE1 Firmware

Samsung Galaxy Z Flip4 F721BXXSCIZE1 is an Android 16 firmware for 58 countries, 86 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 F721BXXSBIZD3: bootloader binary raised from B (11) to C (12), so after installing it there is no way back to older builds; security patch 2026-05-05 instead of 2026-04-05. A newer build for SM-F721B is available: F721BXXSCIZH4.

OS updates guaranteed until: Android 16Security updates until: Jul 29, 2027
Download firmware
9.0/10 (34)48,454 times
Android 16
OS Version
2026-05-07
First release
other regions until 2026-05-08
2026-05-05
Security patch
58
Countries
86
CSC codes
C (12)
Bootloader binary

Bootloader binary C (12). 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#.
    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.
    4
    MODEM/CP Version: F721BXXSCIZE1
    ModelRegionCSC VersionBuild DateRelease dateSizeFile nameDownload
    SM-F721B
    ACR, KSA Saudi Arabia
    AFG Afghanistan
    AFR, DKR Kenya
    BKD Bangladesh
    +40 more countries
    BOG, SFR France
    CAU, SKZ Kazakhstan
    CHO Chile
    ECT Nigeria
    EGY Egypt
    EUX, EUY Europe
    EVR United Kingdom
    FWD, MWD Morocco
    GLB, XTC Philippines
    GTO Guatemala
    ILO Israel
    INS India
    LYS Libya
    MEO Portugal
    MET Ireland
    MID Iraq
    MM1, SIN, STH, XSP Singapore
    MOB Austria
    MOT, SIM Slovenia
    MSR Serbia
    NPL Nepal
    O2C Czechia
    PKD Pakistan
    PLS, PRT Poland
    SEK Ukraine
    SLK Sri Lanka
    SWC Switzerland
    THL Thailand
    TIM Italy
    TOP Montenegro
    TPA Panama
    TUN Tunisia
    TUR Turkey
    VIP Croatia
    XFA, XFE, XFV South Africa
    XME Malaysia
    XNZ New Zealand
    XSG United Arab Emirates
    XXV Vietnam
    BTB, BTE, ILP
    		F721BOXMCIZE1 2026-05-07 2026-05-21 10.13 GiB
    SM-F721B_5_20260507150501_ixhxtv96cy_fac.zip
    MD5:0c5d2e9944d925d4db8c9b6c1b5ef896
    SHA1:02225744936c4e86b8af4d9ae40f21623bb60125
    SM-F721B
    ARO Argentina
    BVO Bolivia
    CDR Dominican Republic
    CGU, PGU Guatemala
    +9 more countries
    COB, COM, COO Colombia
    CRC Chile
    EBE, ECO Ecuador
    EON Trinidad & Tobago
    MXO, TCE Mexico
    PEO, PET, PNT, SAM Peru
    UPO, UYO Uruguay
    ZTA, ZTM, ZTO, ZVV Brazil
    GLO
    		F721BOWOCIZE1 2026-05-08 2026-05-22 10.115 GiB
    SM-F721B_5_20260508231911_g84238n3py_fac.zip
    MD5:951c5468d128c44bfb3892bd17c470e2
    SHA1:f3789edef0634159a8fb318f97c643a9f2fcfc7d
    SM-F721B
    EUX Europe
    		F721BOXTCIZE1 2026-05-08 2026-05-26 9.965 GiB
    SM-F721B_14_20260508203641_s2x0dam2iu_fac.zip
    SM-F721B
    XID Indonesia
    		F721BOLECIZE1 2026-05-08 2026-05-21 10.037 GiB
    SM-F721B_5_20260508221111_otxscxpvz5_fac.zip

    No matching downloads

    How to flash F721BXXSCIZE1

    • F721BXXSCIZE1 has bootloader binary C (12). Your device must run binary C (12) 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 F721BXXSCIZE1

    • 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: May 2026

    SMR May-2026 fixes 36 vulnerabilities, 2 of them critical. Android Security Bulletin: 29, Samsung-specific issues (SVE): 7.

    Most severe Samsung fixes:

    • high Improper input validation in FacAtFunction in Galaxy Watch prior to SMR May-2026 Release 1 allows local attacker to execute arbitrary code with system privilege. (CVE-2026-21019)

    All fixes and Galaxy models with this patch

    Rollout of F721BXXSCIZE1 by region

    First release
    May 21, 2026
    Last region
    May 29, 2026
    Duration
    9 days
    Regions
    86
    1. Day 1 · · 7 regions
      IndonesiaXIDMalaysiaXMENew ZealandXNZPhilippinesGLBXTCThailandTHLVietnamXXV
    2. Day 2 · · 28 regions
      ArgentinaAROBoliviaBVOBrazilZTAZTMZTOZVVChileCHOCRCColombiaCOBCOMCOODominican RepublicCDREcuadorEBEECOGuatemalaCGUGTOPGUMexicoMXOTCEPanamaTPAPeruPEOPETPNTSAMTrinidad & TobagoEON
      +2 more countries
      UruguayUPOUYOGLO
    3. Day 6 · · 43 regions
      AfghanistanAFGAustriaMOBCroatiaVIPCzechiaO2CEgyptEGYEuropeEUXFranceBOGSFRIraqMIDIrelandMETIsraelILOItalyTIMKenyaAFRDKR
      +18 more countries
      LibyaLYSMontenegroTOPMoroccoFWDMWDNigeriaECTPakistanPKDPolandPLSPRTPortugalMEOSaudi ArabiaACRKSASerbiaMSRSingaporeMM1SINSTHXSPSloveniaMOTSIMSouth AfricaXFAXFEXFVSwitzerlandSWCTunisiaTUNTurkeyTURUnited Arab EmiratesXSGUnited KingdomEVRBTBBTEILP
    4. Day 7 · · 1 region
      EuropeEUY
    5. Day 8 · · 3 regions
      KazakhstanCAUSKZUkraineSEK
    6. Day 9 · · 4 regions
      BangladeshBKDIndiaINSNepalNPLSri LankaSLK

    Device specifications

    • Launched withAndroid 12
    • Display diagonal17 cm (6.7")
    • Display resolution2640 x 1080 pixels
    • Processor frequency2.7 GHz
    • Processor familySnapdragon
    • Processor model8+ Gen 1
    • RAM8 GB
    • Rear camera resolution12 MP
    • Rear camera typeDual camera
    • SIM cardsDual SIM
    • Battery capacity3700 mAh
    • Weight187 g

    Frequently Asked Questions

    F721BXXSCIZE1 is Android 16 firmware for Samsung Galaxy Z Flip4, released for 58 countries, 86 CSC codes. It includes the 2026-05-05 security patch. Samsung built it on 2026-05-07.

    SMR May-2026 fixes 36 vulnerabilities, 2 of them critical. Android Security Bulletin: 29, Samsung-specific issues (SVE): 7.

    No. A newer build for SM-F721B is available: F721BXXSCIZH4. Install it instead of F721BXXSCIZE1 unless you need this exact version. The previous build was F721BXXSBIZD3.

    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 Z Flip4 must be on bootloader binary C (12) or lower.

    This build uses bootloader binary C (12). It can be flashed on a Samsung Galaxy Z Flip4 running binary C (12) 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 Z Flip4

    • 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.

    Software enhancement to provide an additional layer of connectivity to Triple Zero services during emergency service outages.

    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.

    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...

    No changelog details available.
    Model firmware by region