Samsung Galaxy Watch3 41mm R855FXXU1DUC2
SM-R855F 12 countries Tizen 5.5.0.2

Samsung Galaxy Watch3 41mm R855FXXU1DUC2 Firmware

Samsung Galaxy Watch3 41mm R855FXXU1DUC2 is an Tizen 5.5.0.2 firmware for 12 countries, 13 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 R855FXXU1DUC1, Android and the bootloader binary are unchanged, so you can switch between the two in both directions. A newer build for SM-R855F is available: R855FXXU1FWK2.

Download firmware
9.1/10 (31)2,515 times
Tizen 5.5.0.2
OS Version
2021-04-19
First release
other regions until 2021-05-03
12
Countries
13
CSC codes
1
Bootloader binary

Bootloader binary 1. 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.
    2
    MODEM/CP Version: R855FXXU1DUC2
    ModelRegionCSC VersionBuild DateRelease dateSizeFile nameDownload
    SM-R855F
    BRI Taiwan
    TGY Hong Kong SAR China
    THL Thailand
    XME Malaysia
    +4 more countries
    XNZ New Zealand
    XSA Australia
    XSP Singapore
    XXV Vietnam
    		R855FOLB1DUC2 2021-04-19 2021-04-16 807.464 MiB
    SM-R855F_1_20210419092836_1tlw89kfxy_fac.zip
    		Download
    SM-R855F
    ILO Israel
    INS, INU India
    XFA South Africa
    XSG United Arab Emirates
    		R855FOXX1DUC2 2021-05-03 2021-05-03 817.127 MiB
    SM-R855F_1_20210503141236_1sfiwism0v_fac.zip
    		Download

    No matching downloads

    How to flash R855FXXU1DUC2

    • R855FXXU1DUC2 has bootloader binary 1. Your device must run binary 1 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 R855FXXU1DUC2

    • The security of your device has been improved.

    Rollout of R855FXXU1DUC2 by region

    First release
    April 16, 2021
    Last region
    May 3, 2021
    Duration
    18 days
    Regions
    12
    1. Day 1 · · 1 region
      Hong Kong SAR ChinaTGY
    2. Day 9 · · 1 region
      AustraliaXSA
    3. Day 12 · · 6 regions
      MalaysiaXMENew ZealandXNZSingaporeXSPTaiwanBRIThailandTHLVietnamXXV
    4. Day 18 · · 4 regions
      IndiaINSIsraelILOSouth AfricaXFAUnited Arab EmiratesXSG

    Device specifications

    • Display diagonal3.05 cm (1.2")
    • Display technologyOLED
    • Display resolution360 x 360 pixels
    • Processor frequency1150 MHz
    • RAM1024 MB
    • Flash memory8 GB
    • Battery capacity247 mAh
    • Weight48.2 g
    • Band materialLeather
    • Band colourBlack

    Frequently Asked Questions

    R855FXXU1DUC2 is Tizen 5.5.0.2 firmware for Samsung Galaxy Watch3 41mm, released for 12 countries, 13 CSC codes. Samsung built it on 2021-04-19.

    No. A newer build for SM-R855F is available: R855FXXU1FWK2. Install it instead of R855FXXU1DUC2 unless you need this exact version. The previous build was R855FXXU1DUC1.

    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 Watch3 41mm must be on bootloader binary 1 or lower.

    This build uses bootloader binary 1. It can be flashed on a Samsung Galaxy Watch3 41mm running binary 1 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 22 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 Watch3 41mm

    • Watch faces
    2 new types of new Watch faces.
    (Stretched Time, Perpetual)
    • Stability and reliability
    The stability for sensors has been improved.

    • Watch Face
    Enjoy new and improved watch faces with enriched style and customizable options.
    - Two new Watch Faces have been added.
      (Pro analog, Gradient number)
    • Samsung Health
    - Through the updated 'Daily Activity Indicator', Mobile Health data is synchronized to improve convenience.
    - Provides a recording function when snoring is detected, using your mobile phone while you sleep.

    • GPS
    The stability has been improved.

    • Watch faces
    - Support the new Watchfaces
    • Exercise
    - Support Group Challenge Widget in watch
    - Provide more accurate calorie consumption levels based on HR (Except swimming)
    • Detect falls
    - More falls will be detected, but other activity may also be detected as falls.
    • Calendar
    - Increase the calendar synchronization period from 3 months to 1 year

    • Enhanced the auto walking/running icons
    • Enhanced the 'Inactive time alerts' icon
    • Device stability improvements, bug fixes.

    The Blood Pressure app and/or ECG app in the Samsung Health Monitor is available in countries where a regulatory clearance, approval or certificate for each app has been obtained.
    We expect that the number of countries where the Samsung Health Monitor to be available will continuously increase in the order of securing an appropriate regulatory clearance, approval or c...

    Show 15 older builds

    • Improved WiFi stability  
    • Improved system stability and reliability

    • The security of your device has been improved.

    • Improved Samsung Health Function
    - You can now enjoy a group-walking challenge with your friends
    - Reduced auto workout recognition time (running, rowing machine, elliptical)
    - Enjoy home workout with a variety of fitness programs
    • SmartThings Find
    - You can find the location of the watch on the map.
    • Hand Wash
    - After downloading the Hand Wash app, your watch can automatically detect and time, when you start washing your hands
    • Blood oxygen
    - Inform how effectively your blood is carr...

    • Improved Samsung Health Function
    - You can now enjoy a group-walking challenge with your friends
    - Reduced auto workout recognition time (running, rowing machine, elliptical)
    - Enjoy home workout with a variety of fitness programs
    • SmartThings Find
    - You can find the location of the watch on the map.
    • Hand Wash
    - After downloading the Hand Wash app, your watch can automatically detect and time, when you start washing your hands
    • Improved system stability and reliability

    • Improved Samsung Health Function
    - You can now enjoy a group-walking challenge with your friends
    - Reduced auto workout recognition time (running, rowing machine, elliptical)
    - Enjoy home workout with a variety of fitness programs
    • SmartThings Find
    - You can find the location of the watch on the map.
    • Hand Wash
    - After downloading the Hand Wash app, your watch can automatically detect and time, when you start washing your hands
    • Improved system stability and reliability

    The Blood Pres...

    No changelog details available.

    • Voice guidance provided via headset connected to mobile when exercising with a watch.
    • Voice guidance provided for traveled distance and HR data, when Auto Lap feature is enabled during Running/Cycling.
    • Improved Blood Oxygen measurement
    • Improved system stability and reliability

    ※ After updating the Samsung Health App and check the new features below.
    - Blood Oxygen : Check how effectively your blood is carrying oxygen.
      * Not Available Countries : Algeria, Angola, Canada, France, Iran, Japan, Libya, South Africa, Thailand
    - Advanced Running Analysis : Giving you the insights you need to improve your running form.
    - VO2max : Check the maximum amount of oxygen you utilize during exercise to improve your endurance.
    - Sleep score : Check out sleep scores, a new way to u...

    • Added new stress tracker on the Samsung Health app.

    ※ After updating the Samsung Health App and check the new features below.
    - Blood Oxygen : Check how effectively your blood is carrying oxygen.
      * Not Available Countries : Algeria, Angola, Canada, France, Iran, Japan, Libya, South Africa, Thailand
    - Advanced Running Analysis : Giving you the insights you need to improve your running form.
    - VO2max : Check the maximum amount of oxygen you utilize during exercise to improve your endurance.
    - Sleep score : Check out sleep scores, a new way to u...

    ※ After updating the Samsung Health App and check the new features below.
    - Blood Oxygen : Check how effectively your respiratory system transfers oxygen to the blood stream.
      * Not Available Countries : Algeria, Angola, Canada, France, Iran, Japan, Libya, South Africa, Thailand
    - Advanced Running Analysis : Giving you the insights you need to improve your running form.
    - VO2max : Check the maximum amount of oxygen you utilize during exercise to improve your endurance
    - Sleep score : Check ou...

    No changelog details available.
    Model firmware by region