Samsung Galaxy A26 5G A266MUBSBCZH1
SM-A266M 15 countries Android 16

Samsung Galaxy A26 5G A266MUBSBCZH1 Firmware

Samsung Galaxy A26 5G A266MUBSBCZH1 is an Android 16 firmware for 15 countries, 41 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 A266MUBSACZG1: bootloader binary raised from A (10) to B (11), so after installing it there is no way back to older builds; security patch 2026-08-05 instead of 2026-07-05. A newer build for SM-A266M is available: A266MUBSCCZJ1.

OS updates guaranteed until: Android 21Security updates until: Mar 24, 2031
8.9/10 (32)10,058 times
Android 16
OS Version
2026-08-18
Build Date
2026-08-05
Security patch
15
Countries
41
CSC codes
B (11)
Bootloader binary

Bootloader binary B (11). Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy A26 5G use bootloader binary C (12) (latest: A266MUBSCCZJ1). 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#.
    MODEM/CP Version: A266MUBSBCZH1
    ModelRegionCSC VersionRelease dateSizeFile nameDownload
    SM-A266M
    ARO, CTI, PSN, PSP, UFN Argentina
    BVO Bolivia
    CDR, DOR Dominican Republic
    CGU, GTO, PGU Guatemala
    +11 more countries
    CHE, CHL, CHO, CHT, CRC Chile
    COB, COL, COM, COO Colombia
    CTP, TGP Paraguay
    CTU, UFU, UPO, UYO Uruguay
    EBE, ECO Ecuador
    EON Trinidad & Tobago
    MXO, TCE Mexico
    PEO, PET, PNT, SAM Peru
    TPA Panama
    ZTA, ZTM, ZTO, ZVV Brazil
    GLO
    		A266MOWOBCZH1 2026-08-26 8.061 GiB
    SM-A266M_3_20260818151921_rjpqgmntl4_fac.zip

    No matching downloads

    Device specifications

    • Launched withAndroid 15
    • Display diagonal17 cm (6.7")
    • Display resolution1080 x 2340 pixels
    • RAM6 GB
    • Rear camera resolution50 MP
    • Rear camera typeTriple camera
    • Battery capacity5000 mAh
    • Weight200 g

    Specifications of SM-A266B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    What's new in A266MUBSBCZH1

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    How to flash A266MUBSBCZH1

    • A266MUBSBCZH1 has bootloader binary B (11). Your device must run binary B (11) 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

    A266MUBSBCZH1 is Android 16 firmware for Samsung Galaxy A26 5G, released for 15 countries, 41 CSC codes. It includes the 2026-08-05 security patch. Samsung built it on 2026-08-18.

    No. A newer build for SM-A266M is available: A266MUBSCCZJ1. Install it instead of A266MUBSBCZH1 unless you need this exact version. The previous build was A266MUBSACZG1.

    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 8.061 GiB; keep about twice that free on the computer to unzip it. The Samsung Galaxy A26 5G must be on bootloader binary B (11) or lower.

    This build uses bootloader binary B (11). It can be flashed on a Samsung Galaxy A26 5G running binary B (11) or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". No other build of this model uses binary B (11).

    Other builds and changelog for Samsung Galaxy A26 5G

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    One UI 8.5
    Visual design

    Fresh new look
    One UI seamlessly integrates into your daily routine by combining immersive visuals with meaningful personalization for a more refined and sophisticated design. Transparent blur effects add depth and make content easier to navigate, while floating elements react organically to your workflow for a more focused experience. Through familiar and intuitive data visualization, One UI delivers a design that feels both personal and relatable, helping you focus...

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    Show 9 older builds

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    One UI 8.0 (Android 16)
    Productivity

    Check stock prices without unlocking
    Stocks you follow on Google Finance with big price changes will appear on your Now bar at the end of the trading day.

    Easier file sharing with Quick Share
    It's never been easier to send and receive files. Tap the Quick Share button in quick settings to get started. You can receive files while the Quick Share screen is open and send files to others directly from Quick Share.

    Sticky notes
    Add quick annotations on top o...

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security

    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Press and hold the Side button to access Google Gemini
    The Side button is a new way to access Google Gemini or other digital assistant app quickly instead of using the corner swipe. You can change what the Side button does in Settings.
    • Complete multiple tasks with one ask
    Google Gemini is now seamlessly integrated with Samsung apps such as Calendar, Notes, Reminder, and Clock. You can complete tasks in these apps using information from Gemini with one simple command. Try asking Google Gemini...

    • Security
    The device is protected with improved security.

    Model firmware by region