• If you need to solve the bug of the sound quality problem after turning on Loudness inside the EQ settings.

    Please skip directly to step 7 and update MCU to fix this bug.

  • Tech Support

    If you have any problems in the firmware update, pleae feel free to contact our technical support team service03@corehan.shop

  • Firmware update video instruction

    If you have any problems reading the process below, you can go through the video guide again to upgrade the firmware.

  • IMPORTANT

    Before downloading the firmware update, please make sure that you are downloading the correct firmware that corresponds to the stereo model you purchased, if the wrong firmware update is used, it will result in the UNRECONVERABILITY OF YOUR STEREO SYSTEM !

    If you can't confirm whether the model of stereo you purchased corresponds, please go to Settings - Version in the stereo system, check whether the serial number of your stereo APP is the same as the red box in the picture below, if it doesn't match, please find the corresponding model firmware page to download the firmware again.

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  • Step 1

    Copy the link below in your computer broswer (Recommended to use Google Chrome), hit the Enter key to start the download.

    Download the firmware file "update.rar" in your desktop or laptop.

    (IMPORTANT NOTE: Before download the firmware, check is the stereo version correct from the IMPORTANT NOTE above)

    ↓[DOWNLOAD]↓

     

  • Step 2

    If there is not a decompression software in your computer, please down and install the 7-zip software in your computer.

    https://www.7-zip.org/

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  • Step 3

    After the download, enter the download folder and install the software 7-zip in your computer system.

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  • Step 4

    Decompress the download file . Press the right key of your mouse under the file name, then select the software 7-zip to decompress the rar file.

    broken image

  • Step 5

    Plug in a USB flash drive (less than 64GB) to your computer and format the drive (make the system format be FAT32).

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  • Step 6

    Copy the document "update" (DO NOT change the document name) to USB drive.

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  • Step 7 (MCU update)

    In this step, you can update the MCU of the stereo, which is used to fix the EQ setting.

    1. Please download the MCU file.

    [DOWNLOAD]

    2. Unzip the MCU file, and you can find there are 4 files in the folder (Use the software 7-Zip, refer to step 3)

    3. Copy these 4 files to the root directory of the USB drive.

    4. Power on the stereo and plug the USB drive into the stereo, enter Settings - System Version - MCU update.

    5. Press the MCU update button to start the update.

  • Step 8

    Plug the USB flash drive to the stereo. Restart the stereo and update process will be started automatically.

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