The following steps may be helpful.
- Is “USB JTAG/serial debug unit” listed under “Universal Serial Bus Devices” in the Device Manager?
Note: not “Ports (COM & LPT)”. - If not, this method does not work.
- If so, right click “USB JTAG/serial debug unit” and “Update Driver”
- select “Browse my computer for drivers”
- select “Let me pick from a list of available drivers on my computer”
- select “USB Serial Device” and click “Next”
If you are lucky, it will be restored.