Thank Bill for this post.
I just managed to update my H4 successfully following your procedure.
In my case I installed Homebrew natively to my Mac, followed by the installation of Dfu-Util.
I then installed Dislord's V1.0.39 firmware and everything worked just fine.
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On Mon, Aug 24, 2020 at 10:02 PM, Bill Cody wrote:
So - I found my own solution for flashing the firmware using the dfu-util
command line interface.
FIRST: I replaced the standard driver using the method here:
Doing this BROKE DfuSe app's ability to detect the device while in DFU mode,
but in my case, I didn't care. I couldn't flash anyway.
1) Download and install dfu-util command line utility (see:
)
2) Place the NanoVNA in DFU mode (in my case, hold down wheel and power on the
NanoVNA - screen goes blank, but power LED flashes)
3) Plug NanoVNA into USB port
4) Get into Terminal (on the Mac) or CMD line interface (on Windows)
5) Type the following: dfu-util -a 0 -D DFU_PATHNAME
(replacing DFU_PATHNAME with your own DFU file. In my particular case I
typed: dfu-util -a 0 -D "C:\Users\wcody\Downloads\NanoVNA-H4
v0.8.2_96kHzIF_3.2kHz_sweep_points 201.dfu"
6) Hit return, and the flashing will commence.
With any luck, you'll power on the NanoVNA and see your latest firmware.
Good luck!!!
