Use a high-quality USB-C cable to connect the speaker to your PC while holding the buttons.
Download and unzip the firmware and tool provided by support. W-king D8 Firmware Update
For newer revisions of the speaker, you can check for updates via the W-KING App for Android or iOS . Firmware Update Instructions (PC Method) Use a high-quality USB-C cable to connect the
Newer firmware versions like v3.61 or v3.7 address Bluetooth dropping issues. How to Get the Official Update W-king D8 Firmware Update