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.

NanoVNA V2 Forum

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Update firmware on NaniVNA V2 Plus4

Rob Derlagen 2021/12/29 05:30

Hello
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?
Thanks
'73
Rob PA1EMT

Shadow 2021/12/29 11:33

Is the device shipped with the exactly same FW that you try to upgrade?

Vladimir Lebedev 2021/12/29 11:42

Hello Rob!
Have You tryed FW download from here https://nanorfe.com/nanovna-versions.html

https://nanorfe.com/downloads/20210726/nanovna-v2-20210726-v2plus4.bin - stable
or
https://nanorfe.com/downloads/20211227/nanovna-v2-20211227-v2plus4.bin - expreimental ?

Best regards
Vladimir, dl7pga

Rob Derlagen 2021/12/30 04:06

Hallo Vladimir
I will try your suggestion and thanks for the links

Hallo Shadow
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
Brgds Rob

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