Note: Please install the FiiO USB DAC driver(Download link: Click here) in your Windows computer first. And do not connect other USB DAC device to the computer at the same when updating the firmware. 1. Connect the 3.5mm headphone to the KA1, then connect the KA1 to the computer. 2. Double click to open the firmware burner. And click ‘Browse’ to select the firmware file.

3. Select the firmware file then click ‘open’ 
4. Click ‘Burn’ in the firmware burner page to start the firmware update.
5. Wait some time and firmware burning will show ‘successed’. 
|