Samsung Galaxy J4 J400MUBS2ARJ1
SM-J400M 5 countries Android 8.0.0 (Oreo)

Samsung Galaxy J4 J400MUBS2ARJ1 Firmware

Samsung Galaxy J4 J400MUBS2ARJ1 is an Android 8.0.0 (Oreo) firmware for 5 countries, 7 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 J400MUBU2ARI2: security patch 2018-10-01 instead of 2018-09-01. A newer build for SM-J400M is available: J400MUBUECWC1.

Download firmware
8.8/10 (479)30,418 times
Android 8.0.0 (Oreo)
OS Version
2018-10-15
First release
other regions until 2018-10-18
2018-10-01
Security patch
5
Countries
7
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.
    ModelRegionCSC VersionMODEM/CP VersionBuild DateRelease dateSizeFile nameDownload
    SM-J400M
    CGU Guatemala
    		J400MOWM2ARJ1J400MUBS2ARJ1 2018-10-15 2018-11-14 — — Download
    SM-J400M
    CPA Panama
    		J400MOWA2ARJ1J400MUBS2ARJ1 2018-10-15 2018-12-14 — — Download
    SM-J400M
    CTE
    		J400MOWM2ARJ1J400MUBS2ARJ1 2018-10-15 2018-11-14 — — Download
    SM-J400M
    ETE
    		J400MOWM2ARJ1J400MUBS2ARJ1 2018-10-15 2018-11-14 — — Download
    SM-J400M
    PCW Panama
    		J400MOWE2ARJ1J400MUBS2ARI2 2018-10-18 2018-12-04 2.482 GiB
    SM-J400M_1_20200602061219_5cecofo0b4_fac.zip
    		Download
    SM-J400M
    PGU Guatemala
    		J400MOWA2ARJ1J400MUBS2ARJ1 2018-10-15 2018-12-14 — — Download
    SM-J400M
    TGP Paraguay
    		J400MOWM2ARJ1J400MUBS2ARJ1 2018-10-15 2018-10-30 — — Download

    No matching downloads

    How to flash J400MUBS2ARJ1

    • J400MUBS2ARJ1 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 J400MUBS2ARJ1

    · The security of your device has been improved.

    Rollout of J400MUBS2ARJ1 by region

    First release
    October 30, 2018
    Last region
    December 14, 2018
    Duration
    46 days
    Regions
    7
    1. Day 1 · · 1 region
      ParaguayTGP
    2. Day 16 · · 3 regions
      GuatemalaCGUCTEETE
    3. Day 36 · · 1 region
      PanamaPCW
    4. Day 46 · · 2 regions
      GuatemalaPGUPanamaCPA

    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

    J400MUBS2ARJ1 is Android 8.0.0 (Oreo) firmware for Samsung Galaxy J4, released for 5 countries, 7 CSC codes. It includes the 2018-10-01 security patch. Samsung built it on 2018-10-15.

    No. A newer build for SM-J400M is available: J400MUBUECWC1. Install it instead of J400MUBS2ARJ1 unless you need this exact version. The previous build was J400MUBU2ARI2.

    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 2.482 GiB; keep about twice that free on the computer to unzip it. 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...

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