Below is the tutorial on how to check your keyboard firmware version on a Windows device. 

Step 1: Open the control panel on your windows device and click the “Devices and Printers” section.

Step 2: Find your current keyboard model in the device, then right click and select “properties”. 

Step 3: Select "Hardware" in the pop-up window, and then click the "HID Keyboard Device" option.

Step 4: Click "Details" in the pop-up window and select the "Hardware ID” option. You will find out the VID, PID, and keyboard firmware version. In the picture below, the keyboard version number is ver 1.00.