MUTT Software helps you to check the Model 3501 firmware and hardware version,
Please download and install the MUTT software package from the Microsoft Website.
After install, Traverse to the directory
C:\Program Files (x86)\USBTest\x64
From the directory, run the below command to find the hardware and Firmware version.
CMuttUtil.exe /list
It will return the SuperMUTT’s VID&PID, Firmware version and hardware version.