Samsung Galaxy A40 A405FMPUS4CUH2
SM-A405FM 1 country Android 11

Samsung Galaxy A40 A405FMPUS4CUH2 Firmware

Samsung Galaxy A40 A405FMPUS4CUH2 is an Android 11 firmware for Russia (SER). 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 A405FMPUU3CUF2: bootloader binary raised from 3 to 4, so after installing it there is no way back to older builds; security patch 2021-09-01 instead of 2021-06-01. A newer build for SM-A405FM is available: A405FMPUU4CWC3.

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Android 11
OS Version
2021-09-14
Build Date
2021-09-01
Security patch
1
Countries
1
CSC codes
4
Bootloader binary

Bootloader binary 4. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

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: A405FNXXS4CUH2
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-A405FM
    SER Russia
    		A405FMSER4CUH2 2021-09-18 3.974 GiB
    SM-A405FM_2_20210831181806_rtzia9sdux_fac.zip

    No matching downloads

    Device specifications

    • Launched withAndroid 9.0
    • Display diagonal15 cm (5.9")
    • Display resolution1080 x 2340 pixels
    • Display typeSAMOLED
    • RAM4 GB
    • Rear camera resolution16 MP
    • Rear camera typeDual camera
    • Battery capacity3100 mAh
    • Weight140 g

    Specifications of SM-A405F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    What's new in A405FMPUS4CUH2

    • The security of your device has been improved.

    How to flash A405FMPUS4CUH2

    • A405FMPUS4CUH2 has bootloader binary 4. Your device must run binary 4 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

    A405FMPUS4CUH2 is Android 11 firmware for Samsung Galaxy A40, released for Russia (SER). It includes the 2021-09-01 security patch. Samsung built it on 2021-09-14.

    No. A newer build for SM-A405FM is available: A405FMPUU4CWC3. Install it instead of A405FMPUS4CUH2 unless you need this exact version. The previous build was A405FMPUU3CUF2.

    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 3.974 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy A40 must be on bootloader binary 4 or lower.

    This build uses bootloader binary 4. It can be flashed on a Samsung Galaxy A40 running binary 4 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 9 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 A40

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

    • The security of your device has been improved.

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

    • The security of your device has been improved.

    • Overall stability of your device has been improved.

    Show 15 older builds

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

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

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

    • The SIM card detection stability has been improved.
    • The stability of Camera has been improved.
    • The security of your device has been improved.

    • The security of your device has been improved.

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

    • Improved stability. - Wi-Fi tethering
    • Overall device performance has been improved.
    • The security of your device has been improved.

    • Overall stability of functions improved.

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    • The SIM card detection stability has been improved.
    • The stability of Camera has been improved.
    • The security of your device has been improved.

    • The security of your device has been improved.

    • Overall stability of functions improved.
    • The stability of Wallpaper has been improved.

    • The SIM card detection stability has been improved.
    • The stability of Camera has been improved.
    • The security of your device has been improved.

    • The SIM card detection stability has been improved.
    • The stability of Camera has been improved.
    • The security of your device has been improved.

    • The SIM card detection stability has been improved.
    • Improved system stability and reliability

    Model firmware by region