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?
Beware of cheap underperforming clones
As of 2022 there are many badly performing clones on the market. V2/3GHz NanoVNA uses parts like ADF4350 and AD8342 which are costly and clones have been cutting costs by using salvaged or reject parts.
See official store and look for V2 Plus4/V2 Plus4 Pro versions only to avoid getting a bad clone. We have stopped selling V2.2 versions since October 2020, so all V2 hardware that are not Plus or Plus4 are not made by us and we can not guarantee performance.
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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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