The F.audio FA4 Go to product viewer dialog for this item.
Here is a historical changelog compiled from FAudio release notes (based on common updates): faudio fa4 firmware upd
FW v2.1.0 (Build date 2025-01-17) Source chain: iPhone 15 Pro (USB-C) → FA4 stock cable → Direct (no DAC) Test tracks used: Daft Punk – Doin’ it Right , Yosi Horikawa – Bubbles , Steely Dan – Gaucho , Billie Eilish – xanny Problem 1: The updater says "No Device Connected"
Recent updates have focused on resolving "crackling" audio issues and improving the device's performance as a USB DAC for PC and Android. Step-by-Step Update Procedure However, the latest has completely elevated the experience
If your FA4 is behaving erratically—cutting out, sounding distorted, or only working on one device—a firmware update is often the first and cheapest fix.
This report investigates the availability and procedure for firmware updates regarding the In-Ear Monitor (IEM). Due to the hardware architecture of the device, the update process differs significantly from modern True Wireless Stereo (TWS) earbuds.
I’ve owned the FAudio FA4 for a while, and they were already impressive IEMs with excellent technical performance and a unique tuning. However, the latest has completely elevated the experience.