Connect your FA4 to your computer via USB-C and copy the firmware file (usually an .ekf file) directly into the root directory of your microSD card.
: After rebooting, the system language may default to Chinese. You will need to navigate back to the settings menu (often the gear icon) to switch it back to Known Issues & Improvements Audio Fixes faudio fa4 firmware install
Ensure your device is fully charged or connected to a power source before starting to prevent it from dying mid-update. Are you experiencing a specific error or seeking a particular firmware version for your FA4? Connect your FA4 to your computer via USB-C