If the device does not have an OSD, connect via USB to a PC and use a terminal tool (e.g., PuTTY) to query the firmware over a serial debug interface.

If your goal is to enable Zlink (for CarPlay/Android Auto), you specifically need the compatible MCU update that supports this feature.

Enhancing the firmware to support seamless connectivity with IoT devices, facilitating the creation of more interconnected and smart systems.

Some designs support "boot from SD card":