On Fri, Jun 3, 2022 at 01:56 PM, A DeCarmo wrote:
I am able to enter into DFU mode from the menu of the NanoVNA
following the instruction in the Absolute Beginner's Guide on
page 45 , But when I start DfuSe Demo nothing shows on the Available DFU
Devices
menu Block.
Using Windows 10 Operating system
System shows NanoVNA using STMicroelectronics Virtual Com Port
(COM3), but when I put the device in DFU mode, virtual com port disappears
any help with this problem will be greatly appreciated.
There is a special DFU driver required when you want to update the firmware using DFUSe demo or NanoVNA app. When you install DFUSe demo this driver gets installed. When you put the NanoVNA in to DFU mode and connect it to the PC you will see the driver under USB devices (NOT ports) in Device manager and your COM3 virtual COM port will disappear.
The Absolute Beginners Guide is a good reference on how to update the firmware. Read it carefully and don't skip a step....
Roger
Roger Need