W-king D9 - Firmware Update Link

Newer W-KING models are designed to be managed via the , which allows you to upgrade firmware and adjust EQ settings wirelessly.

(and the iOS equivalent) is the primary tool for managing supported devices and optimizing your listening experience. Direct Support w-king d9 firmware update

If you own a D9, check the label on the back of your manual or power it on and check the voice prompt (if available). Early models shipped with versions prior to v1.2. The difference is night and day. Newer W-KING models are designed to be managed

Because installing the wrong firmware can permanently damage ("brick") your speaker, it is highly recommended to obtain official files directly from the manufacturer: w-king d9 firmware update