SM-L7050 1 country Wear OS 6.0

Samsung Galaxy Watch Ultra L7050ZCS3BZE1 Firmware

Samsung Galaxy Watch Ultra L7050ZCS3BZE1 is an Wear OS 6.0 firmware for China (CHC). 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 L7050ZCU3BZC1: security patch 2026-05-05 instead of 2026-02-05. A newer build for SM-L7050 is available: L7050ZCS3BZF4.

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Wear OS 6.0
OS Version
2026-06-15
Build Date
2026-05-05
Security patch
1
Countries
1
CSC codes
3
Bootloader binary

Bootloader binary 3. 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: L7050ZCS3BZE1
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-L7050
    CHC China
    		L7050CHC3BZE1 2026-06-15 3.371 GiB
    SM-L7050_2_20260615071950_jnnmhw47oy_fac.zip

    No matching downloads

    How to flash L7050ZCS3BZE1

    • L7050ZCS3BZE1 has bootloader binary 3. Your device must run binary 3 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 L7050ZCS3BZE1

    • 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

    Device specifications

    • Launched withWear OS
    • Display diagonal3.81 cm (1.5")
    • Display technologyAMOLED
    • Display resolution480 x 480 pixels
    • RAM2000 MB
    • Flash memory64 GB
    • Battery capacity590 mAh
    • Weight60.5 g
    • Band materialTitanium
    • Band colourBlue
    • Band sizeOne Size

    Specifications of SM-L705F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    L7050ZCS3BZE1 is Wear OS 6.0 firmware for Samsung Galaxy Watch Ultra, released for China (CHC). It includes the 2026-05-05 security patch. Samsung built it on 2026-06-15.

    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-L7050 is available: L7050ZCS3BZF4. Install it instead of L7050ZCS3BZE1 unless you need this exact version. The previous build was L7050ZCU3BZC1.

    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 3.371 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy Watch Ultra must be on bootloader binary 3 or lower.

    This build uses bootloader binary 3. It can be flashed on a Samsung Galaxy Watch Ultra running binary 3 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 3 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 Watch Ultra

    • Security
    The device is protected with improved security.

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

    • Stability and reliability
    Device behavior has been improved.

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

    • Stability and reliability
    Device behavior has been improved.
    • 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 Watch Upgrade
    Get things done

    Stay on top of important tasks with the Now bar
    Check the information you need right now and start essential features straight from your watch face. Ongoing tasks will appear in the Now bar at the bottom of your watch face so you can check key information quickly.

    Do more with double pinch
    Just pinch your thumb and index finger together twice to scroll through notifications, control music, take pictures, and more. You can also customize what happens wh...

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

    Show 3 older builds

    • Stability and reliability
    The stability has been improved.

    • Stability and reliability
    The stability has been improved.
    • Google Security patch
    The device is protected with improved security.

    • Stability and reliability
    - Battery charging stability has been improved.
    - Battery stability has been improved.
    - Overall device stability has been improved.

    Model firmware by region