Power off the F.audio Fa4 completely (hold the power button, select "Power Off"). Insert the prepared microSD card into the Fa4’s slot.
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
A progress bar will appear. Do not touch the device. Do not force shut down. This takes 3-5 minutes. Once complete, you will see "Update successful." Select "Reboot system now." Power off the F
In the world of portable high-fidelity audio, the F.audio Fa4 has carved out a reputation for being a "dark horse." Known for its massive dynamic range, powerful discrete component amplification, and a surprisingly musical dual-AK4497 DAC implementation, the Fa4 is a favorite among budget-conscious audiophiles who refuse to compromise on sound quality. Format that SD card
The difference between a stock Fa4 and a fully-updated Fa4 is night and day. You will experience fewer glitches, better battery life, and—most importantly—improved sound quality. Whether it's the added PEQ in v2.2 or the smoother digital filter in v2.0, each update is a free upgrade to your $500 DAP.
However, like any sophisticated digital audio player (DAP), the Fa4 is not a static device. Its performance, stability, and feature set are heavily dependent on its software backbone. This is where the (Update) becomes critical.