• Tech Support

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

  • Step 1

    Please download the firmware from the link below:


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

    Download the firmware file on desktop or laptop.

  • Step 2

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


  • Step 3

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

  • 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.

  • Step 5

    Format a microSD card to FAT32 in your computer.

  • Step 6

    Open the firmware folder, copy the 4 files into the ROOT DIRECTORY of the microSD card.

  • Step 7

    Insert the SD card into the stereo card slot, and power on the stereo again.

    The firmware would be updated automatically.