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You use STM-Cube, so you destroy bootloader (need use NanoVNA-App or QT for update in bootload mode)
Upload this in 0x08000000 address as before
4-inch-GD32F303CCT6-20200619 FULL.bin

One of user made full dump for GS-400

I cut remove bootloader and data, try upload it (hold right button and power on, connect to PC, and use NanoVNA-App or QT for update)

If not help you can try flash all data from dump (but need ST-Link), made full dump for your device

This info was a great help to me, thank you!

On 1/29/23 10:45 AM, Ho-Ro wrote:

On Sun, Jan 29, 2023 at 01:19 PM, Fkawee wrote:

I am trying to reload nanovna-saver following the instructions from this link

The program simply works from the source directory without having to install it. The installation allows you to run the program from anywhere, just have the main program in the path and the modules in the Python module path.
When I started hacking nanovna-saver on my Debian stable two years ago, I did just that:
git clone
cd nanovna-saver
Then I looked at the response of "python nanovna-saver.py" (e.g. missing modules) and installed the missing modules - preferably via apt - e.g.
apt install python3-numpy python3-scipy
until nanovna-save.py was satisfied - DONE!
Martin

I did pretty much the same thing..

On Sun, Jan 29, 2023 at 01:19 PM, Fkawee wrote:

I am trying to reload nanovna-saver following the instructions from this link

The program simply works from the source directory without having to install it. The installation allows you to run the program from anywhere, just have the main program in the path and the modules in the Python module path.

When I started hacking nanovna-saver on my Debian stable two years ago, I did just that:

git clone
cd nanovna-saver

Then I looked at the response of "python nanovna-saver.py" (e.g. missing modules) and installed the missing modules - preferably via apt - e.g.
apt install python3-numpy python3-scipy
until nanovna-save.py was satisfied - DONE!

Martin

dislord maybe can help .... (best firmware modder ever hi hi)

dg9bfc sigi

Am 29.01.2023 um 17:51 schrieb Ray WW0AW via groups.io:

Now I realize I should've saved the original firmware before updating but it's too late for that now,

Yes it is a GD32 - I can read it right on the chip.
However .....
The STM32CubeProgrammer Target information tab says :
STM32F101/F103 High Density
Sevice ID 0x414
Flash size 256KB
CPU Cortex-M3
Bootloader version --
Also there is a 24 Mhz xtal, that appears to feed both the MCU CLOCK and the Si5351 if that is significant
Thank you for assisting to resurect this baby - which WAS working until I made the fatal mistake of trying to update the firmware,
Surely there's someone who can point me to the right firmware to reflash

On 1/29/23 4:19 AM, Fkawee wrote:

I once had the nanovna-saver executable working in ver 18 something. I let ubuntu upgrade to ver 20.04. since then the Nanaovna-saver exe does not work. I am trying to reload nanovna-saver following the instructions from this link

When I run the first command i get this error.
"fkawee@fkawee-Satellite-C650:~$ sudo apt install python3.8 python3-pip [sudo] password for fkawee: Reading package lists... Done Building dependency tree... Done Reading state information... Done Package python3.8 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source
E: Package 'python3.8' has no installation candidate"
I tried following the instruction to install a "python virtual environment" with the same results.
I am searching for a fix but can't seem to find any. Any tips would help.
Thanks all

Did you apt update (and/or) apt upgrade - the former updates the local list of packages and where to get them; the latter actually brings in the new packages to your system. You might not want the latter, and would rather upgrade selectively.

apt uses a local directory of packages and maybe it doesn't have python3.8 in it.

So I'd do a "sudo apt update" then do the python install.

I once had the nanovna-saver executable working in ver 18 something. I let ubuntu upgrade to ver 20.04. since then the Nanaovna-saver exe does not work. I am trying to reload nanovna-saver following the instructions from this link



When I run the first command i get this error.

"fkawee@fkawee-Satellite-C650:~$ sudo apt install python3.8 python3-pip [sudo] password for fkawee: Reading package lists... Done Building dependency tree... Done Reading state information... Done Package python3.8 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source

E: Package 'python3.8' has no installation candidate"

I tried following the instruction to install a "python virtual environment" with the same results.
I am searching for a fix but can't seem to find any. Any tips would help.
Thanks all

On Sat, Jan 28, 2023 at 05:52 PM, alan victor wrote:

Along with 30 years of RF DESIGN MAG

Awesome. I have several times looked for RF Design Magazine on the web but never found it. World Radio History has a LOT of good stuff. An excellent resource.

The link...

Well one more time... sorry...

you can forward material to david at worldradiohistory dot com.

Guess my format is not appropriate in this message.

Again his address is...

david@...

The excellent resource is at

world radio history.com

You can reach David for contributions of material at

david@...

Thank you.

Can you give a link or contact info?

A solution is found. I will be sending the notes to David Gleason at WORLD RADIO HISTORY. Along with 30 years of RF DESIGN MAG... They will all be scanned in and the resource avaiable to all interested. He does a superb job at recording these un avaiable docs and if you have precious stuff like this, consider looking into that method of preserving.

Would be interested in a scan of the document if one becomes available.

I have a scanner if the recipient doesn't.

Several replies and spoken for. Perhaps the document can be scanned to share by the recipient. I do not have a scanner.
Thanks,