A week was too long.
Navigate to > System > System Upgrade or System Update . Alpha Coustic Mp-1769 Firmware Download
Finding official firmware for specialized Android head units like the can be difficult as these manufacturers often do not maintain public download repositories. Instead, they typically distribute updates through localized sellers or direct system menus. Recommended Update Methods Wireless (OTA) Update : Connect your head unit to a stable Wi-Fi network. A week was too long