Samsung Galaxy A21s A217MUBU3ATJ1
SM-A217M 18 countries Android 10

Samsung Galaxy A21s A217MUBU3ATJ1 Firmware

Samsung Galaxy A21s A217MUBU3ATJ1 is an Android 10 firmware for 18 countries, 42 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 A217MUBU3ATI1, Android and the bootloader binary are unchanged, so you can switch between the two in both directions. A newer build for SM-A217M is available: A217MUBSCDXF2.

Download firmware
9.4/10 (454)186,428 times
Android 10
OS Version
2020-11-03
First release
other regions until 2020-12-07
2020-09-01
Security patch
18
Countries
42
CSC codes
3
Bootloader binary

Bootloader binary 3. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy A21s use bootloader binary C (12) (latest: A217MUBSCDXF2). If your device already runs binary C (12), 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.
    4
    MODEM/CP Version: A217MUBU3ATJ1
    ModelRegionCSC VersionBuild DateRelease dateSizeFile nameDownload
    SM-A217M
    ALE Ecuador
    ANC Argentina
    BAT, IUS, UNE Mexico
    CHE Chile
    +4 more countries
    CWW, JDI Jamaica
    DOR Dominican Republic
    ICE Costa Rica
    PNT Peru
    		A217MOWE3ATJ1 2020-11-24 2020-11-03 3.418 GiB
    SM-A217M_1_20201028224434_tlz599neje_fac.zip
    		Download
    SM-A217M
    BVO, BVT Bolivia
    CGU, GTO Guatemala
    CHO, CHT Chile
    COB, COO Colombia
    +9 more countries
    EBE Ecuador
    EON Trinidad & Tobago
    MXO, TMM Mexico
    PEO, SAM Peru
    PSP Argentina
    TPA Panama
    UFU, UPO, UYO Uruguay
    ZTA, ZTM, ZTO, ZVV Brazil
    CTE, ETE
    		A217MOWO3ATJ1 2020-12-07 2020-11-03 3.13 GiB
    SM-A217M_1_20201028223534_7vh7gd33p1_fac.zip
    		Download
    SM-A217M
    CDR Dominican Republic
    CHL Chile
    PCT Puerto Rico
    PET Peru
    +1 more country
    TCE Mexico
    		A217MOWA3ATJ1 2020-11-26 2020-11-03 3.118 GiB
    SM-A217M_1_20201028224734_l6kv5r5qi0_fac.zip
    		Download
    SM-A217M
    CPA Panama
    		A217MOWA3ATJ2 2020-11-25 2020-11-25 3.126 GiB
    SM-A217M_1_20201029090033_yyahy568fy_fac.zip
    		Download

    No matching downloads

    How to flash A217MUBU3ATJ1

    • A217MUBU3ATJ1 has bootloader binary 3. Your device must run binary 3 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 A217MUBU3ATJ1

    • Call quality has been improved. (Bluetooth headset, Speaker Mode)
    • The performance of Camera has been improved.

    Rollout of A217MUBU3ATJ1 by region

    First release
    November 3, 2020
    Last region
    December 7, 2020
    Duration
    35 days
    Regions
    42
    1. Day 1 · · 3 regions
      PeruPNTSAMPuerto RicoPCT
    2. Day 2 · · 1 region
      Costa RicaICE
    3. Day 4 · · 3 regions
      ChileCHLMexicoIUSUNE
    4. Day 7 · · 4 regions
      ArgentinaPSPGuatemalaCGUCTEETE
    5. Day 8 · · 2 regions
      ChileCHTMexicoTMM
    6. Day 11 · · 2 regions
      ColombiaCOBMexicoTCE
    7. Day 14 · · 1 region
      ArgentinaANC
    8. Day 15 · · 2 regions
      JamaicaCWWMexicoBAT
    9. Day 16 · · 2 regions
      EcuadorEBEUruguayUFU
    10. Day 17 · · 1 region
      Dominican RepublicDOR

    Release days not shown: 7.

    Device specifications

    • Display diagonal16.5 cm (6.5")
    • Display resolution720 x 1600 pixels
    • Display typePLS
    • Processor frequency2 GHz
    • RAM4 GB
    • Rear camera resolution48 MP
    • Rear camera typeQuad camera
    • SIM cardsDual SIM
    • Battery capacity5000 mAh
    • Weight192 g

    Frequently Asked Questions

    A217MUBU3ATJ1 is Android 10 firmware for Samsung Galaxy A21s, released for 18 countries, 42 CSC codes. It includes the 2020-09-01 security patch. Samsung built it on 2020-11-03.

    No. A newer build for SM-A217M is available: A217MUBSCDXF2. Install it instead of A217MUBU3ATJ1 unless you need this exact version. The previous build was A217MUBU3ATI1.

    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 A21s must be on bootloader binary 3 or lower.

    This build uses bootloader binary 3. It can be flashed on a Samsung Galaxy A21s running binary 3 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 3 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 A21s

    • Overall stability of your device has been improved.
    • The security of your device has been improved.

    · Security patch update

    • Overall stability of your device has been improved.
    • The security of your device has been improved.

    · Security patch update

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

    Show 12 older builds
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    · Device stability improvements, bug fixes.
    · New and / or enhanced features.
    · Further improvements to performance.

    • The security of your device has been improved.

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

    • Overall stability of your device has been improved.
    • The security of your device has been improved.

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

    • The performance of Camera has been improved
    • Enhanced Quick Share
    - Improve file sharing between Galaxy devices using Quick Share.
    • The security of your device has been improved.

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

    Model firmware by region