开云体育

I upgraded the firmware to 1.0.39 and decided that for my use, I liked the version that was on it when I purchased it. When I hold down the function wheel and power on the screen remains black and nothing happens. Has anyone else had this problem and what was the solution to resolve it??
Thanks for your help.
Art Parris

Hello Art Parris!

You have not written what a unit You have. Is it NanoVNA- H4?

Pressing function wheel+ turn on = DFU mode with black screen. Now You can flsh new FW with program DfuSe.

Best regards
Vladimir, dl7pga
Last version og FW is 1.0.64.

NanoVNA-H and NanoVNA-H4 firmware

I press the function wheel + turn on and no "Available DFU Devices" appear in the software. I can import the new firmware but not upload to device. It is a Nano VNA-H4 HW Version 42 S/N H4 20050921.
Thanks for your response.

Have You tried
1. DfuSe
2. NanoVNA-APP 1.1.206
for FW flashing?

You have updated FW 0.5.0 (Hugen) to 1.0.39 (DiSlord). What a software have You used for FW flashing?

Vladimir

This is how it should look when DfuSe is started. Put the NanoVNA-H4 in DFU mode beforehand.
When the NanoVNA-H4 is put into DFU mode, the PC emits a beep (USB port ready).

Is that how it looks with you?

Most ofen mistake - user upload fw from device to CPU (use upload action) and rewrite downloaded firmware. After correct use Upgrade button - user just reload old firmware stored in downloaded file.

Reload firmware from internet, and use correct upgrade action in DFUSe

Folks, to help with the issue DiSlord described below, I modified the DeFuse utility interface buttons to have better meanings.?
Please download the zipped file from the forum's file section. It's under mods.
Thread is here...
/g/nanovna-users/topic/76480999#17028?


On Sun., 27 Jun. 2021 at 1:46 p.m., DiSlord<dislordlive@...> wrote: Most ofen mistake - user upload fw from device to CPU (use upload action) and rewrite downloaded firmware. After correct use Upgrade button - user just reload old firmware stored in downloaded file.

Reload firmware from internet, and use correct upgrade action in DFUSe

I reloaded thee software and it shows the device. I uploaded the new firmware and the program shows device 00 updated and the screen shot is like the one you provided. When I check the firmware version on the Nano it is still 1.0.39. I tried the another version with the same results.

Thanks for your help.
Art

Art, if you're using defuse to update the software, read my post several messages back.?
Defuse uses confusing terms. Upload means to copy from the device to the PC.?
Read my post and install the modified defuse I made, then delete the firmware file you've been trying to install and download and install a new copy.?


On Mon., 28 Jun. 2021 at 10:45 a.m., aparrisjr@...<aparrisjr@...> wrote: I reloaded thee software and it shows the device. I uploaded the new firmware and the program shows device 00 updated and the screen shot is like the one you provided. When I check the firmware version on the Nano it is still 1.0.39. I tried the another version with the same results.

Thanks for your help.
Art