Samsung Galaxy J4 J400MUBU2ARJ3
SM-J400M 16 countries Android 8.0.0 (Oreo)

Samsung Galaxy J4 J400MUBU2ARJ3 Firmware

Samsung Galaxy J4 J400MUBU2ARJ3 is an Android 8.0.0 (Oreo) firmware for 16 countries, 32 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 J400MUBS2ARJ1, Android and the bootloader binary are unchanged, so you can switch between the two in both directions. A newer build for SM-J400M is available: J400MUBUECWC1.

Download firmware
8.8/10 (478)139,756 times
Android 8.0.0 (Oreo)
OS Version
2018-10-19
First release
other regions until 2018-12-11
2018-10-01
Security patch
16
Countries
32
CSC codes
2
Bootloader binary

Bootloader binary 2. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy J4 use bootloader binary E (14) (latest: J400MUBUECWC1). If your device already runs binary E (14), 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.
    22
    ModelRegionCSC VersionMODEM/CP VersionBuild DateRelease dateSizeFile nameDownload
    SM-J400M
    ARO Argentina
    BVO Bolivia
    CHP Chile
    COO Colombia
    +6 more countries
    EON Trinidad & Tobago
    MXO Mexico
    PEO Peru
    TPA Panama
    UYO Uruguay
    ZTO Brazil
    		J400MOWO2ARJ1J400MUBU2ARJ1 2018-10-22 2018-11-02 2.307 GiB
    SM-J400M_1_20200521225328_4c11av2dwg_fac.zip
    		Download
    SM-J400M
    CDR Dominican Republic
    		J400MOWA2ARG2J400MUBU2ARJ3 2018-10-19 2019-01-05 — — Download
    SM-J400M
    CHO Chile
    		J400MOWO2ARJ1J400MUBU2ARJ3 2018-10-19 2018-11-09 — — Download
    SM-J400M
    CHQ Chile
    		J400MOWO2ARJ1J400MUBU2ARJ3 2018-10-19 2018-11-09 — — Download
    SM-J400M
    COB Colombia
    CRM Costa Rica
    		J400MOWT2ARG1J400MUBU2ARJ1 2018-11-15 2019-01-15 2.341 GiB
    SM-J400M_1_20200602062621_yj682unx6a_fac.zip
    		Download
    SM-J400M
    COL Colombia
    		J400MOWM2ARK1J400MUBU2ARJ3 2018-10-19 2018-12-10 — — Download
    SM-J400M
    COM Colombia
    		J400MOWA2ARG2J400MUBU2ARJ3 2018-10-19 2018-12-08 — — Download
    SM-J400M
    CTI Argentina
    		J400MOWA2ARG2J400MUBU2ARJ3 2018-10-19 2018-11-30 — — Download
    SM-J400M
    CTP Paraguay
    		J400MOWA2ARG2J400MUBU2ARJ3 2018-10-19 2018-12-11 — — Download
    SM-J400M
    CTU Uruguay
    		J400MOWA2ARG2J400MUBU2ARJ3 2018-10-19 2018-12-08 — — Download
    SM-J400M
    DOO Dominican Republic
    		J400MOWO2ARJ1J400MUBU2ARJ3 2018-10-19 2018-11-01 — — Download
    SM-J400M
    ECO Ecuador
    		J400MOWA2ARG2J400MUBU2ARJ3 2018-10-19 2018-12-13 — — Download
    SM-J400M
    PCT Puerto Rico
    		J400MOWA2ARI1J400MUBU2ARJ3 2018-10-19 2018-12-13 — — Download
    SM-J400M
    PSN Argentina
    		J400MOWB2ARG2J400MUBU2ARJ1 2018-11-14 2018-12-14 2.415 GiB
    SM-J400M_1_20200604231703_qw6oq8l7ao_fac.zip
    		Download
    SM-J400M
    PSP Argentina
    		J400MOWB2ARG2J400MUBU2ARJ1 2018-11-14 2018-12-14 2.415 GiB
    SM-J400M_1_20200602060922_8ovoytqmgl_fac.zip
    		Download
    SM-J400M
    TGP Paraguay
    		J400MOWM2ARK2J400MUBU2ARJ1 2018-12-11 2018-12-13 2.266 GiB
    SM-J400M_1_20200602061720_83nxo03wjp_fac.zip
    		Download
    SM-J400M
    TGU Guatemala
    		J400MOWT2ARK1J400MUBU2ARJ3 2018-10-19 2019-01-17 — — Download
    SM-J400M
    UPO Uruguay
    		J400MOWO2ARJ1J400MUBU2ARJ3 2018-10-19 2018-11-12 — — Download
    SM-J400M
    ZTA Brazil
    		J400MOWA2ARG2J400MUBU2ARJ3 2018-10-19 2019-01-05 — — Download
    SM-J400M
    ZTM Brazil
    		J400MOWB2ARH1J400MUBU2ARJ3 2018-10-19 2018-12-18 — — Download
    SM-J400M
    ZTR Brazil
    		J400MOWB2ARL1J400MUBU2ARJ3 2018-10-19 2019-01-17 — — Download
    SM-J400M
    ZVV Brazil
    		J400MOWT2ARG1J400MUBU2ARJ3 2018-10-19 2019-01-10 — — Download

    No matching downloads

    How to flash J400MUBU2ARJ3

    • J400MUBU2ARJ3 has bootloader binary 2. Your device must run binary 2 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 J400MUBU2ARJ3

    · The stability of Camera has been improved.
    · The security of your device has been improved.

    Rollout of J400MUBU2ARJ3 by region

    First release
    November 1, 2018
    Last region
    January 17, 2019
    Duration
    78 days
    Regions
    32
    1. Day 1 · · 1 region
      Dominican RepublicDOO
    2. Day 2 · · 6 regions
      BoliviaBVOBrazilZTOColombiaCOOPeruPEOTrinidad & TobagoEONUruguayUYO
    3. Day 6 · · 1 region
      MexicoMXO
    4. Day 9 · · 2 regions
      ChileCHOCHQ
    5. Day 12 · · 2 regions
      ChileCHPUruguayUPO
    6. Day 14 · · 1 region
      ArgentinaARO
    7. Day 15 · · 1 region
      PanamaTPA
    8. Day 30 · · 1 region
      ArgentinaCTI
    9. Day 38 · · 2 regions
      ColombiaCOMUruguayCTU
    10. Day 40 · · 1 region
      ColombiaCOL

    Release days not shown: 8.

    Device specifications

    • Display diagonal14 cm (5.5")
    • Display resolution720 x 1280 pixels
    • Display typeSAMOLED
    • RAM2 GB
    • Rear camera resolution13 MP
    • Rear camera typeSingle camera
    • Battery capacity3000 mAh
    • Weight175 g

    Specifications of SM-J400F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    Frequently Asked Questions

    J400MUBU2ARJ3 is Android 8.0.0 (Oreo) firmware for Samsung Galaxy J4, released for 16 countries, 32 CSC codes. It includes the 2018-10-01 security patch. Samsung built it on 2018-10-19.

    No. A newer build for SM-J400M is available: J400MUBUECWC1. Install it instead of J400MUBU2ARJ3 unless you need this exact version. The previous build was J400MUBS2ARJ1.

    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 J4 must be on bootloader binary 2 or lower.

    This build uses bootloader binary 2. It can be flashed on a Samsung Galaxy J4 running binary 2 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 10 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 J4

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

    · Security patch update

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

    • The security of your device has been improved.

    • Added new feature. - Google RCS(Rich Communication Service)
    • Overall stability of functions improved.
    • The security of your device has been improved.

    Show 6 older builds

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

    • LGPD (General Personal Data Protection Law) has been applied.
    • The security of your device has been improved.

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

    One UI 2 upgrade with Android 10

    One UI 2 brings you Android 10, with exciting new features from Samsung and Google based on feedback from users like you.
    We recommend that you back up your important data to keep it safe during the upgrade.
    Some apps, including Calculator, Samsung Internet, Samsung Health and Samsung Notes, need to be updated individually after you update your OS.

    Here's what's new.

    Dark mode
    - Enhanced image, text, and color adjustments for day and night environments.
    - Dark...

    Model firmware by region