Or via CLI over SSH:

: Resolves bugs like audio interruptions, app crashes, or touch screen unresponsiveness.

A: No, provided you download the firmware from the official supplier. Third-party binaries will void all support agreements.

Since these units are often generic, there is no single official website. You must match the and hardware ID (e.g., ZCD-7089-6905C) exactly before proceeding to avoid "bricking" the device. Method 1: USB/SD Card Manual Flash

§