F.audio Fa4 Firmware Upd -

Copy the firmware image file (e.g., fa4_update.img ) directly to the root directory of the microSD card. Do not place it inside any folder.

Set aside 15 minutes tonight. Format that SD card. Download the latest . Your ears will thank you. Disclaimer: Always backup your music and settings before performing a firmware update. The author is not responsible for any damage incurred during the update process. Always follow the official guide provided by F.audio. F.audio Fa4 Firmware UPD

Power off the F.audio Fa4 completely (hold the power button, select "Power Off"). Insert the prepared microSD card into the Fa4’s slot. Copy the firmware image file (e