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    Samsung Galaxy M15 (SM-M156B) - ZTO - M156BXXS8CZA3 firmware

    Samsung Galaxy M15 firmware M156BXXS8CZA3 is the Android 16 build for the Samsung Galaxy M15 (model SM-M156B), released by Samsung for Brazil (ZTO). It was built on 7 January 2026, carries the 2026-01-01 Android security patch, has changelist 32144845. The package combines system build M156BXXS8CZA3 (AP/PDA) with CSC build M156BOWO8CZA3 for the ZTO region code. The download is 7.0 GB and has MD5 checksum fb249f5cf143eb674a73581e384eab0d, so you can verify the file after downloading. SamMobile added this file to the firmware archive on 14 September 2026.

    Country
    Model SM-M156B
    Product Code ZTO
    Security Patch 2026-01-01
    OS Version Android 16
    PDA M156BXXS8CZA3
    CSC M156BOWO8CZA3
    Build Date 2026-01-07
    Changelist 32144845
    File size 7.0 GB (7,567,306,930 bytes)
    MD5 fb249f5cf143eb674a73581e384eab0d
    Join to Download Fast download

    M156BXXS8CZA3 for other regions and carriers

    The same M156BXXS8CZA3 build is also available for these SM-M156B regions:

    Other SM-M156B firmware for Brazil (ZTO)

    All SM-M156B firmware for ZTO · All Samsung Galaxy M15 (SM-M156B) firmware

    How to flash M156BXXS8CZA3 on the Samsung Galaxy M15 (SM-M156B)

    We recommend updating through Samsung's own tools: over-the-air (Settings › Software update) or Samsung Smart Switch on a PC. Flash the full firmware with Odin only when you are sure about the risks. A wrong region or a failed flash can brick the device, and SamMobile is not responsible for any damage.

    1. Download the firmware package above and extract the ZIP. It contains the AP (PDA), BL, CP and CSC files, plus a HOME_CSC file.
    2. Download and extract Odin on a Windows PC, and install the Samsung USB drivers if the PC does not detect the phone.
    3. Switch the device off and boot it into Download mode (usually Volume Up + Volume Down while connecting the USB cable, or Volume Down + Bixby + Power on older models).
    4. Open Odin. The ID:COM box turns blue when the device is connected.
    5. Load the files in their slots: BL, AP, CP and CSC. Use HOME_CSC to keep your apps and data, CSC to wipe the device.
    6. Leave Re-Partition unticked and click Start. The device reboots when Odin shows PASS. The first boot after a flash can take a few minutes.

    Step-by-step PDFs: 5-file firmware and 1-file firmware.

    What the build numbers mean

    PDA / AP (M156BXXS8CZA3) is the Android system build; its last three characters encode the year, month and revision. CSC (M156BOWO8CZA3) is the region and carrier configuration, and CP is the modem firmware. The product code ZTO identifies the region or carrier this package was made for (Brazil); our list of Samsung CSC codes maps every code to its country and carrier. Flashing a package for a different product code changes carrier features and can be refused by the bootloader, so pick the one that matches the CSC shown under Settings › About phone › Software information.