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    Samsung GALAXY EXPRESS 2 (SM-G3815) - CNX - G3815XXUBMK5 firmware

    Samsung GALAXY EXPRESS 2 firmware G3815XXUBMK5 is the Android 4.2.2 build for the Samsung GALAXY EXPRESS 2 (model SM-G3815), released by Samsung for Romania (Vodafone) (CNX). It was built on 18 November 2013, has changelist 2141322. The package combines system build G3815XXUBMK5 (AP/PDA) with CSC build G3815VFGBMK5 for the CNX region code. SamMobile added this file to the firmware archive on 3 February 2014.

    Country
    Model SM-G3815
    Product Code CNX
    Security Patch
    OS Version Android 4.2.2
    PDA G3815XXUBMK5
    CSC G3815VFGBMK5
    Build Date 2013-11-18
    Changelist 2141322
    Join to Download Fast download

    G3815XXUBMK5 for other regions and carriers

    The same G3815XXUBMK5 build is also available for these SM-G3815 regions:

    Other SM-G3815 firmware for Romania (Vodafone) (CNX)

    All SM-G3815 firmware for CNX · All Samsung GALAXY EXPRESS 2 (SM-G3815) firmware

    How to flash G3815XXUBMK5 on the Samsung GALAXY EXPRESS 2 (SM-G3815)

    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 (G3815XXUBMK5) is the Android system build; its last three characters encode the year, month and revision. CSC (G3815VFGBMK5) is the region and carrier configuration, and CP is the modem firmware. The product code CNX identifies the region or carrier this package was made for (Romania (Vodafone)). 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.