Note: When you click the links below to download the firmware, it indicates that you have already read and agreed to the Open source licenses.

FiiO USB DAC driver: Click here

How to update the XMOS firmware: Click here

Please do not update this firmware if you are not planning to turn off the RGB light for your K7. 

1. If you would like to turn off the RGB light, please update the 1.24 OFF firmware in the package for your K7.

And after updating the 1.22 firmware in the package , you could get the RGB light turned on again.

Firmware download link: Click here

2. If you meet the not output or volume not adjustable problem in headphone out after installing the above firmware. Please install the following firmware for help:

Firmware download link: Click here