Samsung Galaxy Tab S7 T870ZCU1BUAC
SM-T870 1 country Android 11

Samsung Galaxy Tab S7 T870ZCU1BUAC Firmware

Samsung Galaxy Tab S7 T870ZCU1BUAC is an Android 11 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 T870XXU1BUA8, Android and the bootloader binary are unchanged, so you can switch between the two in both directions. A newer build for SM-T870 is available: T870XXS8DXH1.

OS updates guaranteed until: Android 13. Security updates until: Aug 23, 2024
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Android 11
OS Version
2021-01-29
Build Date
2021-01-01
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.

Newer builds of Samsung Galaxy Tab S7 use bootloader binary 8 (latest: T870XXS8DXH1). If your device already runs binary 8, 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: T870ZCU1BUAC
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-T870
    CHN China
    T870CHN1BUAC 2021-01-30 4.83 GiB
    SM-T870_2_20210126095935_u68t0rakea_fac.zip

    No matching downloads

    Device specifications

    • Launched withAndroid 10
    • Display diagonal27.9 cm (11")
    • Display resolution2560 x 1600 pixels
    • Processor frequency1.8 GHz
    • Processor familyQualcomm Snapdragon
    • Processor model865+
    • Rear camera resolution13 MP
    • Rear camera typeDual camera
    • Front camera resolution8 MP
    • Wi-Fi standardWi-Fi 6 (802.11ax)
    • Weight498 g

    What's new in T870ZCU1BUAC

    One UI 3.1 Upgrade (Android 11)

    One UI 3.1 is designed to help you focus on what matters. Our visual redesign has improved the places you visit the most, like the Home screen and quick panel, to reduce distractions, highlight important information, and make your experience more consistent. Performance improvements will help apps run quicker while using less battery power. And One UI 3.1 puts control in your hands with new privacy controls, one-time permissions, and enhanced Digital Wellbeing.

    Scroll down for a full list of changes.

    Visual design

    We’ve refreshed the look and feel of One UI 3 in lots of ways, big and small, from new, more consistent icons to smarter organization of the quick panel and notifications. Motion is smoother and more natural than ever, with improved animations and haptic feedback for common interactions. And the interface responds to different screen sizes to provide the best experience on any device, whether it’s a phone, foldable, or tablet.

    Improved performance

    We optimized One UI 3 with enhanced dynamic memory allocation, so apps run faster and perform better. We’ve also restricted background activities to provide better performance and power usage.

    Better customization

    • New image categories have been added to Dynamic Lock screen, and you can select up to 5 categories at once.

    • On the Lock screen, you can add a widget to check your usage time.

    • Get an interactive preview when setting a wallpaper.

    • Adjusting the Lock screen is easier.

    • In Samsung Internet, you can reorder and lock tabs.

    • Bixby Routines has even more controls to help you automate your life.

    • New icons and Lock screen widgets make it easier to find and control your routines.

    • Use Digital Wellbeing with separate personal and work profiles.

    Enhanced features

    Home screen and Lock screen

    • Add widgets by touching and holding an app on the Home screen.

    • Turn off the screen by double tapping on an empty space on the Home or Lock screen. (Set it up in Settings > Advanced features > Motions and gestures.)

    • On the Lock screen, tap the clock area to see widgets like calendar, weather, and music.

    Calls and chats

    • See conversations separately in the notification panel. Works with Messages and your favorite chat apps.

    • Easily remove duplicate contacts stored in the same account in Contacts. The storage period for deleted contacts has been extended from 15 days to 30 days.

    • Added the ability to edit multiple linked contacts from a single screen.

    Pictures and videos

    • Take pictures quicker with improved auto focus and auto exposure.

    • View, edit, and share pictures and videos more easily from Gallery.

    • Find pictures and videos quicker with new search features and categories in Gallery.

    • Revert edited pictures to their original versions at any time, even after they’re saved, so you never lose a shot.

    Settings

    • Settings has a new simpler look and feel. Your Samsung account is shown at the top, and Home screen settings are now easier to access.

    • Find the settings you need more easily with new Search features. You’ll get better results for synonyms and common misspellings, and you can tap on tags to see groups of related settings.

    • Quick settings buttons have been reduced to provide only the most commonly used features. You can also add buttons to create your own customized quick panel.

    Samsung Keyboard

    • Increased the number of input languages to 370.

    • Made it easier to paste copied images and verification codes from text messages.

    • Added emoji and sticker suggestions when you enter a text-based emoticon.

    • Reorganized Keyboard settings so it's easier to access frequently used settings.

    Productivity

    Maintain a healthy balance between work and life by minimizing repetitive and complicated tasks and handling them efficiently.

    • New routines will be recommended based on your daily life and usage patterns.

    • Bixby Routines provide a setting to return everything to the way it was before the routine ran.

    • In Internet, you can hide the status and navigation bars for a more immersive experience and quickly translate webpages.

    • You’ll be prompted to block websites that send too many pop-ups or notifications.

    • You can browse and select cloud drive files from the file selection screen in My Files.

    • You can now delete cache files in My Files to easily free up storage space.

    • Events with the same start time are displayed together in the month and list views in Calendar.

    • Use your phone or tablet app icon layout in Samsung DeX so you know where everything is.

    • Open the touch pad from the navigation bar on your phone or tablet.

    Easy media and device control

    Media and device control is easier with the improved media panel in notifications. You can see recently used media apps and quickly change the playback device.

    Identify and improve your digital habits

    Improved Digital Wellbeing features make it easy to check how you're using your phone or tablet and help you form good digital habits. Check your usage while driving or see weekly changes in your screen time by function at a glance through upgraded weekly reports.

    Accessibility for everyone

    One UI 3 recommends useful accessibility features for you based on your usage. The improved Accessibility shortcut makes accessibility features easier to start and use. You can use the Speak keyboard input aloud feature to get voice feedback of your typing even when TalkBack is turned off.

    Stronger privacy protection

    You can now let an app access to your microphone, camera, or location just one time. Any permissions that an app hasn’t used in a while will be automatically revoked. You can no longer give apps permission to always see your location in the regular permission popup. To let apps access your location when they’re not in use, you need to go to the location permission page for the app in Settings.

    Enhanced connectivity with other devices.

    • The tablet can be used as an additional display device to a computer.

    • Support Buds auto switching between Galaxy phone and tablet (when using a same Samsung account in both devices).

    • Support Samsung Internet and Samsung Notes continuity between devices using a same Samsung account.

    • Support Copy/Paste of texts and images between devices using a same Samsung account.

    • Support inputs from the tablet keyboard by sharing the tablet keyboard case with a smartphone.

    Additional improvements

    • In Clock, you can hear the time and preset name of the alarm read aloud when an alarm rings.

    Some apps will need to be updated separately after the One UI 3 update.

    You can no longer use Wi-Fi Direct to send files to other devices. You can use Quick Share instead. You can still receive files using Wi-Fi Direct.

    How to flash T870ZCU1BUAC

    • T870ZCU1BUAC 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

    T870ZCU1BUAC is Android 11 firmware for Samsung Galaxy Tab S7, released for China (CHN). It includes the 2021-01-01 security patch. Samsung built it on 2021-01-29.

    No. A newer build for SM-T870 is available: T870XXS8DXH1. Install it instead of T870ZCU1BUAC unless you need this exact version. The previous build was T870XXU1BUA8.

    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 4.83 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy Tab S7 must be on bootloader binary 1 or lower.

    This build uses bootloader binary 1. It can be flashed on a Samsung Galaxy Tab S7 running binary 1 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 16 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 S7

    • Security
    The device is protected with improved security.

    • The latest Android security patch has been applied.
    - Device security has been further enhanced.

    • Blue light filter
    - Settings for the following have been added : Turn on as scheduled
    • Overall stability of functions improved.
    • The security of your device has been improved.

    • The latest Android security patch has been applied.
    - Device security has been further enhanced.

    • The security of your device has been improved.

    Show 15 older builds

    • The latest Android security patch has been applied.
    - Device security has been further enhanced.

    • Security
    The device is protected with improved security.

    • The latest Android security patch has been applied.
    - Device security has been further enhanced.

    • The security of your device has been improved.

    One UI 5.1.1 Update
    Multitasking

    Better app previews on the Recents screen
    The Recents screen now shows apps as they will appear after you open them. You can easily see if an app is opened in split screen, full screen, or as a pop-up.

    Easily switch from pop-up view to split screen
    Press and hold the handle at the top of the pop-up window, then drag the app to the side of the screen where you want it to be shown.

    Restore pop-ups snapped to the edge of the screen
    Drag an app in pop-up view t...

    One UI 5.1.1 Update
    Multitasking

    Better app previews on the Recents screen
    The Recents screen now shows apps as they will appear after you open them. You can easily see if an app is opened in split screen, full screen, or as a pop-up.

    Easily switch from pop-up view to split screen
    Press and hold the handle at the top of the pop-up window, then drag the app to the side of the screen where you want it to be shown.

    Restore pop-ups snapped to the edge of the screen
    Drag an app in pop-up view t...

    • Overall stability of your device has been improved.
    • The latest Android security patch has been applied.
    - Device security has been further enhanced.

    • Overall stability of your device has been improved.
    • The latest Android security patch has been applied.
    - Device security has been further enhanced.

    One UI 5.1 Update
    One UI 5.1 takes your tablet to the next level with new Gallery features as well as productivity and personalization enhancements.

    Camera and Gallery

    Quickly change the color tone for selfies
    It's easier to change the color tone of your selfies using the Effects button on the side of the screen.

    More powerful search
    You can now search your Gallery for more than one person or subject at the same time. You can even search for people without tagging their names just by tapping...

    • The security of your device has been improved.

    One UI 5.1 Update
    One UI 5.1 takes your tablet to the next level with new Gallery features as well as productivity and personalization enhancements.

    Camera and Gallery

    Quickly change the color tone for selfies
    It's easier to change the color tone of your selfies using the Effects button on the side of the screen.

    More powerful search
    You can now search your Gallery for more than one person or subject at the same time. You can even search for people without tagging their names just by tapping...

    One UI 5.1 Update
    One UI 5.1 takes your tablet to the next level with new Gallery features as well as productivity and personalization enhancements.

    Camera and Gallery

    Quickly change the color tone for selfies
    It's easier to change the color tone of your selfies using the Effects button on the side of the screen.

    More powerful search
    You can now search your Gallery for more than one person or subject at the same time. You can even search for people without tagging their names just by tapping...

    • Stability and reliability
    Device behavior has been improved.

    • The security of your device has been improved.

    • Overall stability of your device has been improved.
    • The latest Android security patch has been applied.
    - Device security has been further enhanced.