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    Samsung GALAXY GRAND Prime (SM-G531F) - COS - G531FXXU1APA1 firmware

    Samsung GALAXY GRAND Prime firmware G531FXXU1APA1 is the Android 5.1.1 build for the Samsung GALAXY GRAND Prime (model SM-G531F), released by Samsung for Greece (Cosmote) (COS). It was built on 15 January 2016, has changelist 948127. The package combines system build G531FXXU1APA1 (AP/PDA) with CSC build G531FCOS1APA1 for the COS region code. SamMobile added this file to the firmware archive on 23 February 2016.

    Country
    Model SM-G531F
    Product Code COS
    Security Patch
    OS Version Android 5.1.1
    PDA G531FXXU1APA1
    CSC G531FCOS1APA1
    Build Date 2016-01-15
    Changelist 948127
    Join to Download Fast download

    G531FXXU1APA1 for other regions and carriers

    The same G531FXXU1APA1 build is also available for these SM-G531F regions:

    Other SM-G531F firmware for Greece (Cosmote) (COS)

    All SM-G531F firmware for COS · All Samsung GALAXY GRAND Prime (SM-G531F) firmware

    How to flash G531FXXU1APA1 on the Samsung GALAXY GRAND Prime (SM-G531F)

    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 (G531FXXU1APA1) is the Android system build; its last three characters encode the year, month and revision. CSC (G531FCOS1APA1) is the region and carrier configuration, and CP is the modem firmware. The product code COS identifies the region or carrier this package was made for (Greece (Cosmote)). 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.