I have try to update my nanoVNA V2 Plus4 with the latested release from
git-20210530-412578c to 20210726 stable.
With NanoVNA-QT software it looks like the file is transfered to the nanoVNA but
after de reset I still see the old version 20210530 via menu config/version.
Any idea what is wrong?
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Update firmware on NaniVNA V2 Plus4
Is the device shipped with the exactly same FW that you try to upgrade?
Have You tryed FW download from here https://nanorfe.com/nanovna-versions.html
https://nanorfe.com/downloads/20210726/nanovna-v2-20210726-v2plus4.bin - stable
https://nanorfe.com/downloads/20211227/nanovna-v2-20211227-v2plus4.bin - expreimental ?
I will try your suggestion and thanks for the links
The firmware I have in the device is a old version until now I have never update the NanoVNA.
But I will check futher like you state with a HEX editor.
Thanks for your update
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