Samsung Galaxy Z Flip4 F721BXXSCIZE2
SM-F721B 1 country Android 16

Samsung Galaxy Z Flip4 F721BXXSCIZE2 Firmware

Samsung Galaxy Z Flip4 F721BXXSCIZE2 is an Android 16 firmware for Australia (OPS, TEL, VAU, XSA). 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 F721BXXSCIZE1, Android and the bootloader binary are unchanged, so you can switch between the two in both directions. A newer build for SM-F721B is available: F721BXXSCIZH4.

OS updates guaranteed until: Android 16Security updates until: Jul 27, 2027
9.3/10 (97)2,416 times
Android 16
OS Version
2026-05-08
Build Date
2026-05-05
Security patch
1
Countries
4
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#.
    MODEM/CP Version: F721BXXSCIZE2
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-F721B
    OPS, TEL, VAU, XSA Australia
    		F721BOXMCIZE2 2026-05-21 10.129 GiB
    SM-F721B_5_20260508210640_b97kmdtdj6_fac.zip

    No matching downloads

    How to flash F721BXXSCIZE2

    • F721BXXSCIZE2 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 F721BXXSCIZE2

    • 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 F721BXXSCIZE2 by region

    Samsung released this build in all regions (4) on the same day, May 21, 2026.

    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

    F721BXXSCIZE2 is Android 16 firmware for Samsung Galaxy Z Flip4, released for Australia (OPS, TEL, VAU, XSA). It includes the 2026-05-05 security patch. Samsung built it on 2026-05-08.

    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 F721BXXSCIZE2 unless you need this exact version. The previous build was F721BXXSCIZE1.

    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 10.129 GiB; keep about twice that free on the computer to unzip it. 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