Samsung Galaxy A40s A3051XXU3BTB2
SM-A3051 1 country Android 10

Samsung Galaxy A40s A3051XXU3BTB2 Firmware

Samsung Galaxy A40s A3051XXU3BTB2 is an Android 10 firmware for Taiwan (BRI). 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 A3051XXU3BTA4: security patch 2020-03-01 instead of 2019-12-01. A newer build for SM-A3051 is available: A3051XXS4CWA3.

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Android 10
OS Version
2020-02-20
Build Date
2020-03-01
Security patch
1
Countries
1
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 A40s use bootloader binary 4 (latest: A3051XXS4CWA3). If your device already runs binary 4, 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: A3051XXU3BTB2
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-A3051
    BRI Taiwan
    		A3051OLO3BTB3 2020-03-30 3.298 GiB
    SM-A3051_2_20210426133707_hpg19gtxod_fac.zip

    No matching downloads

    Device specifications

    • Display diagonal16.3 cm (6.4")
    • Display resolution1080 x 2340 pixels
    • Display typeSAMOLED
    • RAM4 GB
    • Rear camera resolution16 MP
    • Rear camera typeDual camera
    • Battery capacity4000 mAh
    • Weight165 g

    Specifications of SM-A305F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    What's new in A3051XXU3BTB2

    · The security of your device has been improved.

    How to flash A3051XXU3BTB2

    • A3051XXU3BTB2 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.

    Frequently Asked Questions

    A3051XXU3BTB2 is Android 10 firmware for Samsung Galaxy A40s, released for Taiwan (BRI). It includes the 2020-03-01 security patch. Samsung built it on 2020-02-20.

    No. A newer build for SM-A3051 is available: A3051XXS4CWA3. Install it instead of A3051XXU3BTB2 unless you need this exact version. The previous build was A3051XXU3BTA4.

    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 3.298 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy A40s must be on bootloader binary 3 or lower.

    This build uses bootloader binary 3. It can be flashed on a Samsung Galaxy A40s running binary 3 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 6 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 A40s

    · The security of your device has been improved.

    · The security of your device has been improved.

    · The security of your device has been improved.

    · The security of your device has been improved.

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    · The security of your device has been improved.

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    · The security of your device has been improved.

    · The security of your device has been improved.

    Model firmware by region