Samsung Galaxy Z Fold3 5G SC55BOMS1EYK1
SC-55B 1 country Android 15

Samsung Galaxy Z Fold3 5G SC55BOMS1EYK1 Firmware

Samsung Galaxy Z Fold3 5G SC55BOMS1EYK1 is an Android 15 firmware for Japan (DCM). 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 SC55BOMU1EYF4: security patch 2025-11-01 instead of 2025-05-01. A newer build for SC-55B is available: SC55BOMS1EZH2.

Download firmware
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Android 15
OS Version
2026-02-06
Build Date
2025-11-01
Security patch
1
Countries
1
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#.
    MODEM/CP Version: SC55BOMS1EYK1
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SC-55B
    DCM Japan
    		SC55BDCM1EYK1 2026-02-10 7.736 GiB
    SC-55B_4_20251105092120_b0lhj6sils_fac.zip
    MD5:bf4c355990043a449d8245cecd91ed74
    SHA1:eabfff4a0133452ba4a07f6cc921422185719f42
    		Download

    No matching downloads

    How to flash SC55BOMS1EYK1

    • SC55BOMS1EYK1 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 SC55BOMS1EYK1

    · Device stability improvements, bug fixes.
    · New and / or enhanced features.
    · Further improvements to performance.

    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

    Frequently Asked Questions

    SC55BOMS1EYK1 is Android 15 firmware for Samsung Galaxy Z Fold3 5G, released for Japan (DCM). It includes the 2025-11-01 security patch. Samsung built it on 2026-02-06.

    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 SC-55B is available: SC55BOMS1EZH2. Install it instead of SC55BOMS1EYK1 unless you need this exact version. The previous build was SC55BOMU1EYF4.

    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 7.736 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy Z Fold3 5G must be on bootloader binary 1 or lower.

    This build uses bootloader binary 1. It can be flashed on a Samsung Galaxy Z Fold3 5G running binary 1 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 21 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 Z Fold3 5G

    · Device stability improvements, bug fixes.
    · New and / or enhanced features.
    · Further improvements to performance.

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    · Device stability improvements, bug fixes.
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    Show 11 older builds

    · Device stability improvements, bug fixes.
    · New and / or enhanced features.
    · Further improvements to performance.

    ・Device stability improvements, bug fixes.
    ・New and / or enhanced features.
    ・Further improvements to performance.

    ＜note＞
    ・Please back up your data before updating.
    ・After the software is updated, downgrading to the previous version is not available.
    ・Please update the applications after the software is updated.
    ・Appcloud will be available after the software is upgraded.
    ・Refer to this link (https://www.docomo.ne.jp/support/manual/sc55b/) to find out more about operation changes after updating...

    · Device stability improvements, bug fixes.
    · New and / or enhanced features.
    · Further improvements to performance.

    ・Device stability improvements, bug fixes.
    ・New and / or enhanced features.
    ・Further improvements to performance.

    ＜note＞
    ・Please back up your data before updating.
    ・After the software is updated, downgrading to the previous version is not available.
    ・Please update the applications after the software is updated.
    ・After the software is upgraded, Suguden will no longer be available.
    ・After the software is upgraded, Change Home Widget is removed from the widget list.
    　※You can continue to use th...

    · Device stability improvements, bug fixes.
    · New and / or enhanced features.
    · Further improvements to performance.

    ・Device stability improvements, bug fixes.
    ・New and / or enhanced features.
    ・Further improvements to performance.
    ・Improved security
    A new indicator on the top right of your status bar so you know when your app are accessing your microphone or camera are being accessed

    ＜note＞
    ・Please back up your data before updating.
    ・After the software is updated, downgrading to the previous version is not available.
    ・Please update the applications after the software is updated.

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