D8 Firmware Update | W-king

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: You will usually need the "Multi Media Product Tool" (often version 2.07) and a reliable USB data cable . W-king D8 Firmware Update

: Use a small pin to press the reset button (usually located inside the AUX port or behind the rubber flap) while the unit is on. : Plug the speaker into your PC using

: Plug the speaker into your PC using a high-quality USB cable while continuing to hold both buttons. : Once the PC app recognizes the device, click the Download/Update button in the app. Completion W-king D8 Firmware Update

| Problem | Likely Cause | Solution | |--------|-------------|----------| | Speaker says “Update failed” | Wrong file name or card not FAT32 | Re-format card, rename to update.bin exactly | | No response when holding Power | Card not inserted before power-on | Remove card, power off, re-insert, then hold Power | | Speaker is stuck in a loop | Corrupt update file | Re-download firmware from official source, repeat process | | Buttons unresponsive after update | Incomplete flash | – do not turn off if still lit |