Audio driver of "USB 4 mic array" had been disappeared

[HyunCheol_Kim]

Speaker/mic driver(windows10) is never listed after dfu.py on my PC.
But tuning.py is working well.
This “USB 4 mic array” is working on the other windows PC.
Please let me know the way to recover my audio driver.

[zackhe]

I see same issue with my device. The device is never listed as an audio device.