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Apologies for the repeat of an ongoing topic.

As a recent purchase I am banging my head against the wall attempting to update the firmware for my nanovna-h. I have no issues configuring and using it to undertake SWR for my antennas.

However, when attempting to update the DFU file, my windows 11 device manager immediately shows the device disappear and still in the DFUSE software the device does not exist.

Is anyone able to provide a step by step approach of the key drivers etc...and the order of installation that I need to go through to finally get this device updated.

Thank you, Pete

Pete, you are having a driver problem. Windows11 has the most recent driver from ST, so it thinks it is the best one to use, and doesn't try to install the older driver that works with DfuseDemo and nanovna-app. (This driver does work with the latest STMCubeProgrammer from st.com.)

Please see the detailed steps I provided for getting the correct driver installed in the .pdf file at the following link. This is in the files section of this group. Let me know if it doesn't clearly explain the solution, and I'll update it:
/g/nanovna-users/files/Miscellaneous/DFU-mode%20Driver%20for%20Win10Win11

Stan KC7XE

Hi Stan,

Shortsightedness on my part and I hadn't looked well enough and found your instructions which worked perfectly, thank you ever so much, Pete

On Sun, Feb 9, 2025 at 11:18 AM, Stan Dye wrote:

Please see the detailed steps I provided for getting the correct driver
installed in the .pdf file at the following link. This is in the files section
of this group. Let me know if it doesn't clearly explain the solution, and
I'll update it:
/g/nanovna-users/files/Miscellaneous/DFU-mode%20Driver%20for%20Win10Win11

Stan KC7XE

I have been using the STM32 Cube Programmer (latest is now 2.19).

Thanks so much for the docs and driver so I can now switch back and forth. I'm so used to the STM32 way but it's nice to be able to use the NanoVNA-App as well.