Samsung Galaxy S21 5G SCG09KDU1CWH3 Firmware

Samsung Galaxy S21 5G SCG09KDU1CWH3 is an Android 13 firmware for Japan (KDI). 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 SCG09KDU1CWF3 https://samfirm.shop/build/SCG09KDU1CWF3: security patch 2023-08-01 instead of 2023-06-01. A newer build for SCG09 is available: SCG09KDS1EYJ1 https://samfirm.shop/build/SCG09KDS1EYJ1.

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Android 13
OS Version
2023-09-12
Build Date
2023-08-01
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: SCG09KDU1CWH3
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SCG09
    KDI Japan
    SCG09QDI1CWH3 2023-09-13 6.522 GiB
    SCG09_3_20230814084030_w6zd76q99c_fac.zip

    No matching downloads

    What's new in SCG09KDU1CWH3

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

    How to flash SCG09KDU1CWH3

    • SCG09KDU1CWH3 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.

    Frequently Asked Questions

    SCG09KDU1CWH3 is Android 13 firmware for Samsung Galaxy S21 5G, released for Japan (KDI). It includes the 2023-08-01 security patch. Samsung built it on 2023-09-12.

    No. A newer build for SCG09 is available: SCG09KDS1EYJ1. Install it instead of SCG09KDU1CWH3 unless you need this exact version. The previous build was SCG09KDU1CWF3.

    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 6.522 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy S21 5G must be on bootloader binary 1 or lower.

    This build uses bootloader binary 1. It can be flashed on a Samsung Galaxy S21 5G running binary 1 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 19 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 S21 5G

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

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    ■OS update notice■
    Android™ 14 OS update is now available.

    The implementation of the OS update will add new functions, improve usability, and change the names of functions and items.
    Please check the details and notes about the update on the website in advances, and then implement the update.

    Please back up data before implementing the OS update.
    After implementing the OS update, you cannot revert to the old one.
    As the update file size is large, please use Wi-Fi®.

    During the OS update, you...

    Show 15 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.

    · 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.

    ■OS update notice■
    Android™ 13 OS update is now available.

    The implementation of the OS update will add new functions, improve usability, and change the names of functions and items.
    Please check the details and notes about the update on the website of au in advances, and then implement the update.
    (https://www.au.com/information/notice_mobile/update/update-202301-scg09/)

    Please back up data before implementing the OS update.
    After implementing the OS update, you cannot revert to the old one....

    · 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.

    · 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.

    · 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.

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    · Device stability improvements, bug fixes.
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    · Further improvements to performance.

    · 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.