Samsung Galaxy Tab S10+ X820ZCU4BYH4
SM-X820 1 country Android 15

Samsung Galaxy Tab S10+ X820ZCU4BYH4 Firmware

Samsung Galaxy Tab S10+ X820ZCU4BYH4 is an Android 15 firmware for China (CHN). 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 X820XXS4BYH2, Android and the bootloader binary are unchanged, so you can switch between the two in both directions. A newer build for SM-X820 is available: X820XXSBDZI2.

OS updates guaranteed until: Android 22Security updates until: Oct 23, 2031
8.7/10 (237)1,491 times
Android 15
OS Version
2025-08-26
Build Date
2025-08-01
Security patch
1
Countries
1
CSC codes
4
Bootloader binary

Bootloader binary 4. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy Tab S10+ use bootloader binary B (11) (latest: X820XXSBDZI2). If your device already runs binary B (11), 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#.
    MODEM/CP Version: X820ZCU4BYH4
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-X820
    CHN China
    		X820CHN4BYH4 2025-08-26 9.47 GiB
    SM-X820_2_20250821123911_30v724idr4_fac.zip

    No matching downloads

    Device specifications

    • Display diagonal31.5 cm (12.4")
    • Display resolution2800 x 1752 pixels
    • Rear camera resolution13 MP
    • Rear camera typeDual camera
    • Front camera resolution12 MP
    • Wi-Fi standardWi-Fi 6E (802.11ax)
    • Weight571 g

    Specifications of SM-X820N, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    What's new in X820ZCU4BYH4

    • 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.

    How to flash X820ZCU4BYH4

    • X820ZCU4BYH4 has bootloader binary 4. Your device must run binary 4 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

    X820ZCU4BYH4 is Android 15 firmware for Samsung Galaxy Tab S10+, released for China (CHN). It includes the 2025-08-01 security patch. Samsung built it on 2025-08-26.

    No. A newer build for SM-X820 is available: X820XXSBDZI2. Install it instead of X820ZCU4BYH4 unless you need this exact version. The previous build was X820XXS4BYH2.

    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 9.47 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy Tab S10+ must be on bootloader binary 4 or lower.

    This build uses bootloader binary 4. It can be flashed on a Samsung Galaxy Tab S10+ running binary 4 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 7 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 Tab S10+

    • 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.

    • 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.

    • 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 15 older builds

    • Security
    The device is protected with improved security.

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

    One UI 8.5
    Visual design

    Fresh new look
    One UI seamlessly integrates into your daily routine by combining immersive visuals with meaningful personalization for a more refined and sophisticated design. Transparent blur effects add depth and make content easier to navigate, while floating elements react organically to your workflow for a more focused experience. Through familiar and intuitive data visualization, One UI delivers a design that feels both personal and relatable, helping you focus...

    One UI 8.5
    Visual design

    Fresh new look
    One UI seamlessly integrates into your daily routine by combining immersive visuals with meaningful personalization for a more refined and sophisticated design. Transparent blur effects add depth and make content easier to navigate, while floating elements react organically to your workflow for a more focused experience. Through familiar and intuitive data visualization, One UI delivers a design that feels both personal and relatable, helping you focus...

    • 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.

    • 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.

    • 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 8.0 (Android 16)
    Galaxy AI

    Create unique pet portraits
    Bring out your pet's personality with Portrait studio. You can now apply portrait effects to pictures of dogs and cats in addition to people. Choose from styles like Fisheye lens, oil painting, and more.

    Clean up sound
    Use Audio eraser to automatically reduce the volume of wind and other background noises so you can focus on who's talking. Audio eraser can be used in Gallery, Video Player, Samsung Notes, Voice Recorder, and Phone...

    One UI 8.0 (Android 16)
    Galaxy AI

    Create unique pet portraits
    Bring out your pet's personality with Portrait studio. You can now apply portrait effects to pictures of dogs and cats in addition to people. Choose from styles like Fisheye lens, oil painting, and more.

    Clean up sound
    Use Audio eraser to automatically reduce the volume of wind and other background noises so you can focus on who's talking. Audio eraser can be used in Gallery, Video Player, Samsung Notes, Voice Recorder, and Phone...

    • 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.

    • Security
    The device is protected with improved security.

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

    Model firmware by region