Samsung Galaxy Watch Ultra L705FXXU1AYCD
SM-L705F 23 countries Wear OS 6

Samsung Galaxy Watch Ultra L705FXXU1AYCD Firmware

Samsung Galaxy Watch Ultra L705FXXU1AYCD is an Wear OS 6 firmware for 23 countries, 24 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 L705FXXU1AXL1: security patch 2025-03-01 instead of 2024-11-01. A newer build for SM-L705F is available: L705FXXS3BZF4.

Download firmware
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Wear OS 6
OS Version
2025-04-23
Build Date
2025-03-01
Security patch
23
Countries
24
CSC codes
1
Bootloader binary

Bootloader binary 1. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy Watch Ultra use bootloader binary 3 (latest: L705FXXS3BZF4). 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#.
    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.
    6
    MODEM/CP Version: L705FXXU1AYCD
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-L705F
    ARO Argentina
    CHO Chile
    COO Colombia
    MXO Mexico
    		L705FOWO1AYCD 2025-04-23 3.412 GiB
    SM-L705F_1_20250423104651_5q1okkwkgz_fac.zip
    		Download
    SM-L705F
    ATO Austria
    AUT Switzerland
    BGL Bulgaria
    BTU United Kingdom
    +3 more countries
    DBT Germany
    TPH Portugal
    XEF France
    		L705FOXA1AYCD 2025-04-23 3.594 GiB
    SM-L705F_1_20250423102821_vopegiv9rl_fac.zip
    		Download
    SM-L705F
    BRI Taiwan
    TGY Hong Kong SAR China
    THL Thailand
    XME Malaysia
    +3 more countries
    XNZ New Zealand
    XSA Australia
    XSP Singapore
    		L705FOLB1AYCD 2025-04-23 3.486 GiB
    SM-L705F_1_20250423103330_a4lm701enf_fac.zip
    		Download
    SM-L705F
    CAU Kazakhstan
    SLK Sri Lanka
    		L705FOXX1AYCD 2025-04-23 3.594 GiB
    SM-L705F_1_20250423102851_ux1nf5c6vc_fac.zip
    		Download
    SM-L705F
    DCM, KDI Japan
    SJP
    		L705FSJP1AYCD — 3.467 GiB
    SM-L705F_1_20250423105451_81m2l0efjb_fac.zip
    		Download
    SM-L705F
    XAC Canada
    		L705FOYV1AYCD 2025-04-23 3.448 GiB
    SM-L705F_1_20250423104821_sebcoad1k1_fac.zip
    		Download

    No matching downloads

    How to flash L705FXXU1AYCD

    • L705FXXU1AYCD 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 L705FXXU1AYCD

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

    Security patch: March 2025

    SMR Mar-2025 fixes 55 vulnerabilities, 11 of them critical. Android Security Bulletin: 49, Samsung-specific issues (SVE): 6.

    Most severe Samsung fixes:

    • high Improper access control in SecSettingsIntelligence (CVE-2025-20903)

    All fixes and Galaxy models with this patch

    Rollout of L705FXXU1AYCD by region

    Samsung released this build in all regions (19) on the same day, April 23, 2025.

    Device specifications

    • Launched withWear OS
    • Display diagonal3.81 cm (1.5")
    • Display technologyAMOLED
    • Display resolution480 x 480 pixels
    • Processor frequency1600 MHz
    • RAM2000 MB
    • Flash memory64 GB
    • Battery capacity590 mAh
    • Weight60.5 g
    • Band materialTitanium
    • Band colourBlue
    • Band sizeOne Size

    Frequently Asked Questions

    L705FXXU1AYCD is Wear OS 6 firmware for Samsung Galaxy Watch Ultra, released for 23 countries, 24 CSC codes. It includes the 2025-03-01 security patch. Samsung built it on 2025-04-23.

    SMR Mar-2025 fixes 55 vulnerabilities, 11 of them critical. Android Security Bulletin: 49, Samsung-specific issues (SVE): 6.

    No. A newer build for SM-L705F is available: L705FXXS3BZF4. Install it instead of L705FXXU1AYCD unless you need this exact version. The previous build was L705FXXU1AXL1.

    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 Watch Ultra must be on bootloader binary 1 or lower.

    This build uses bootloader binary 1. It can be flashed on a Samsung Galaxy Watch Ultra running binary 1 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 9 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.

    No changelog details available.

    • 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.

    • 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.

    Show 8 older builds
    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...

    • The usability of device operations has been improved.

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

    • 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
    The stability has been improved.

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

    No changelog details available.
    Model firmware by region