Faudio — Fa4 Firmware Upd

: BT 5.0 with bidirectional support for APTX HD, AAC, and SBC.

If you are experiencing device failure, contact FAudio support for warranty service rather than attempting a firmware flash, as this is not possible for this model. faudio fa4 firmware upd

Some users report that after updating to 9.2, the system language may default to Chinese. This can be manually changed back to English in the system settings. General Update Procedure for F.Audio DAPs : BT 5