SM-R8950 1 country Wear OS 6.0

Samsung Galaxy Watch4 Classic R8950ZCS2JZE1 Firmware

Samsung Galaxy Watch4 Classic R8950ZCS2JZE1 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 R8950ZCU2JZC1: security patch 2026-05-05 instead of 2026-02-05. A newer build for SM-R8950 is available: R8950ZCS2JZG3.

9.3/10 (83)552 times
Wear OS 6.0
OS Version
2026-06-22
Build Date
2026-05-05
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.

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: R8950ZCS2JZE1
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-R8950
    CHC China
    		R8950CHC2JZE1 2026-06-23 2.965 GiB
    SM-R8950_4_20260622130851_yvzcq6nyvi_fac.zip

    No matching downloads

    Device specifications

    • Launched withWear OS
    • Display diagonal3.56 cm (1.4")
    • Display technologyOLED
    • Display resolution450 x 450 pixels
    • RAM1500 MB
    • Flash memory16 GB
    • Battery capacity247 mAh
    • Weight52 g
    • Band colourGrey

    Specifications of SM-R895F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    What's new in R8950ZCS2JZE1

    • Security
    The device is protected with improved security.

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

    How to flash R8950ZCS2JZE1

    • R8950ZCS2JZE1 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.

    Frequently Asked Questions

    R8950ZCS2JZE1 is Wear OS 6.0 firmware for Samsung Galaxy Watch4 Classic, released for China (CHC). It includes the 2026-05-05 security patch. Samsung built it on 2026-06-22.

    No. A newer build for SM-R8950 is available: R8950ZCS2JZG3. Install it instead of R8950ZCS2JZE1 unless you need this exact version. The previous build was R8950ZCU2JZC1.

    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 2.965 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy Watch4 Classic must be on bootloader binary 2 or lower.

    This build uses bootloader binary 2. It can be flashed on a Samsung Galaxy Watch4 Classic running binary 2 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 Watch4 Classic

    • 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.

    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.

    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...

    Show 10 older builds

    • 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.

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

    One UI 6 Watch Upgrade
    A new look for your watch

    Discover new watch faces
    Express your individual style with these new premium watch faces. Spatial Number provides an analog clock on top of large bold digits. Simple Digital is for people who prefer a minimalist design. Ultra Info Board lets you quickly check your workout information. You can find these watch faces in the new featured watch faces section of the Galaxy Wearable app. You can also browse watch faces by keyword including colors,...

    • Stability and reliability
    The stability has been improved.

    • Stability and reliability
    The stability has been improved.

    One UI 5 Watch Upgrade

    Watch faces and tiles

    • Add watch faces and tiles more easily
    A new vertical layout makes it easier to find the watch faces and tiles that are right for you.

    • Check the battery level of all your devices
    The new Battery tile lets you quickly check the battery level of your watch, phone, and Galaxy Buds.

    • Improved Buds controller tile
    You can now turn 360 audio on and off from the Buds controller tile if your Buds support 360 audio.

    • Quick access to timers
    You can st...

    • Some apps will be changed to deletable.
    • The following features will have menus added to the Settings app.
    - Bixby : Settings →  Advanced features → Bixby Settings
    - Recently used apps : Settings → Advanced features → Customize keys → Back key → Short press → Show recent apps
    • New Camera Controller feature added
    Change zoom on your phone camera remotely through pinching in or out on the screen, or through rotating the bezel.
    ※ This feature is only supported on flagship models released aft...

    • Watch Face
    Enjoy new and improved watch faces with enriched style and customizable options.
    - 6 new watch faces
      (Pebbles, Flower garden, Info Board, Pro analog, Kinetic digits, Gradient number)
    - More customizable options added for existing watch faces
      (Dial, Indexes, Character, Color, Complication, Clock type)
    - New complications have been added.
    • Watch home screen
    - Add watch faces as your favorite, make finding and changing watch face easier.
    - Explore watch face list to add wat...

    • Watch faces
    - Supports 4 types of new Watch faces.
    - Together, AR Emoji, Bitmoji Watch face: Usability was improved.
    - My Photo Watch face: Supports GIF files.
    - Animal, Cute Character Watch face: Customization feature was improved.
    - Supports the backup and restoration of the order of Watch faces and the changed settings of the preloaded Watch faces.
    • Samsung Health
    - An improved HR measurement accuracy algorithm was added.
    - The sensitivity option in the Fall Detection feature was ad...

    Model firmware by region