Updating Microsoft Miracast adapter firmware

Microsoft Miracast display adapter worked for me for a couple years. Suddenly I couldn’t pair from my Android device. The adapter is configured to use a PIN, and I had the correct PIN, but nothing would work. I had firmware V.2.0.8372 on the Microsoft Miracast adapter.

Recovery

I found a real Windows 10 laptop, as typical virtual machine software such as VirtualBox doesn’t provide the necessary software links to allow Miracast to work from a Windows guest OS. I had to find a natively booting Windows 10 laptop. After a couple tries, I could connect.

  1. Disable PIN and restart adapter
  2. Enable PIN and restart adapter

Then the Miracast adapter again worked from my Android device as usual.

I did check for low supply voltage, I don’t believe that was a problem since I swapped monitors and power sources.

Update Miracast firmware

From a native Windows 10 laptop:

  1. Windows Store → Microsoft Wireless Display Adapter
  2. connect to your Miracast adapter.
  3. Select Firmware Update

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