How to proceed
1) Download the update_tools
and Unzip in a folder, for example on Desktop.
2) ERASE THE FLASH
3) When you replug the erased device, Windows can ask about a driver.
The needed driver info file is between the unzipped files.
4) Be sure to be connected to internet.
5) Run ConfigTool.exe and press download firmware. (FLASH CPU)
6) When done close ConfigTool.exe and Unplug the USB Cable.
7) Replug the USB cable and if it's all ok the audio driver needs to detect the device.