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.
Hello, I received the Nano this morning I test and work, I started to upgrade firmware upload with NANOvna QT after the screen stay blank (gris) the Nano work only with the PC software, not work stand alone..
Some help, please
Read user manual to reboot in safe mode.
You have to push the power on while another button ( do not rem ember which
one) and do again the firmware flash procedure.
Le mer. 20 oct. 2021 à 17:03, Francesco <realfran@gmx.co.uk> a écrit :
OK came back to live! Flashing couples of time the firmware and go to normal.
Thank you.
Regards.
Francesco.
**Sent:** Wednesday, October 20, 2021 at 4:29 PM
**From:** "F1RVC" <f1rvc.patrice@gmail.com>
**To:** NanoVNAV2@groups.io
**Subject:** Re: [nanovnav2] Help for NanoVNA 2/4
Read user manual to reboot in safe mode.
You have to push the power on while another button ( do not rem ember which
one) and do again the firmware flash procedure.
Le mer. 20 oct. 2021 a 17:03, Francesco
<[realfran@gmx.co.uk](mailto:realfran@gmx.co.uk)> a ecrit :
> Hello, I received the Nano this morning I test and work, I started to
upgrade firmware upload with NANOvna QT after the screen stay blank (gris) the
Nano work only with the PC software, not work stand alone..
> Some help, please
>
>
>
>
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