@dbtech You can download it from the following website:
https://coolpi-my.sharepoint.com/personal/coolpi_coolpi_onmicrosoft_com/_layouts/15/onedrive.aspx?ga=1&id=%2Fpersonal%2Fcoolpi_coolpi_onmicrosoft_com%2FDocuments%2Fcoolpi%2Fcoolpi%2FCoolPi 4B%2Fubuntu