Steve,
If the defuse demo installation lasted for so long, you may need help to you someone on the spot.
You can view the process description from a different perspective on my website
There are several options to resolve the error.
This is a prerequisite for putting Nanovna in DFU mode before and plugging on the USB.
Sometimes USB3 does not recognize, look for USB2.
If I write a lot of opportunities, you will definitely get lost.
That's it for now.
--
Gyula HA3HZ ( )
HA3HZ