When the USB cable is connected to PC, a wizard window (Download)
will pop up to guide you through USB driver installation process. Now
you can remove tweezers for next step.
Step 4. Update firmware:
Click “Download”, you will see following figure to show FW Download
progress.
As a reminder, make sure your PC’s connected to the Internet.
After the FW is downloaded, the button will change to “Upgrade”, now
you can update the FW.