SM-L5050 1 country Wear OS 6.0

Samsung Watch8 Classic 46mm L5050ZCU2AYK1 Firmware

Samsung Watch8 Classic 46mm L5050ZCU2AYK1 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 L5050ZCU1AYH6: bootloader binary raised from 1 to 2, so after installing it there is no way back to older builds; security patch 2025-11-01 instead of 2025-08-01. A newer build for SM-L5050 is available: L5050ZCS3AZF4.

9.0/10 (29)194 times
Wear OS 6.0
OS Version
2025-11-24
Build Date
2025-11-01
Security patch
1
Countries
1
CSC codes
2
Bootloader binary

Bootloader binary 2. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Watch8 Classic 46mm use bootloader binary 3 (latest: L5050ZCS3AZF4). If your device already runs binary 3, 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#.
    MODEM/CP Version: L5050ZCU2AYK1
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-L5050
    CHC China
    		L5050CHC2AYK1 2025-11-24 3.389 GiB
    SM-L5050_1_20251124153731_f8dhh01zm6_fac.zip

    No matching downloads

    How to flash L5050ZCU2AYK1

    • L5050ZCU2AYK1 has bootloader binary 2. Your device must run binary 2 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 L5050ZCU2AYK1

    • 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.

    Security patch: November 2025

    SMR Nov-2025 fixes 33 vulnerabilities, 2 of them critical. Android Security Bulletin: 24, Samsung Semiconductor: 5, Samsung-specific issues (SVE): 4.

    Most severe Samsung fixes:

    • high Out-of-bounds write in handling opcode in fingerprint trustlet (CVE-2025-21071)
    • high Out-of-bounds read in libimagecodec.quram.so (CVE-2025-21074)
    • high Out-of-bounds write in libimagecodec.quram.so (CVE-2025-21075)

    All fixes and Galaxy models with this patch

    Device specifications

    • Launched withWear OS
    • Display diagonal3.3 cm (1.3")
    • Display technologyAMOLED
    • Display resolution438 x 438 pixels
    • RAM2000 MB
    • Flash memory64 GB
    • Battery capacity445 mAh
    • Weight63.5 g
    • Band colourWhite

    Specifications of SM-L505F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    L5050ZCU2AYK1 is Wear OS 6.0 firmware for Samsung Watch8 Classic 46mm, released for China (CHC). It includes the 2025-11-01 security patch. Samsung built it on 2025-11-24.

    SMR Nov-2025 fixes 33 vulnerabilities, 2 of them critical. Android Security Bulletin: 24, Samsung Semiconductor: 5, Samsung-specific issues (SVE): 4.

    No. A newer build for SM-L5050 is available: L5050ZCS3AZF4. Install it instead of L5050ZCU2AYK1 unless you need this exact version. The previous build was L5050ZCU1AYH6.

    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 3.389 GiB; keep about twice that free on the computer to unzip it. The Samsung Watch8 Classic 46mm must be on bootloader binary 2 or lower.

    This build uses bootloader binary 2. It can be flashed on a Samsung Watch8 Classic 46mm running binary 2 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". No other build of this model uses binary 2.

    Other builds and changelog for Samsung Watch8 Classic 46mm

    • 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.
    • Security
    The device is protected with improved security.

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

    No changelog details available.
    Model firmware by region