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Beware of cheap underperforming clones

As of July 2024 there are clones sold under various names, many using harmonics to exaggerate specs while using software modifications to hide the noisy performance. Regardless of advertised specs these are all the same hardware, based on an older and outdated design, with performance usually deteriorating by 1GHz. V2 and later designs rely on costly RF synthesizer and mixer ICs such as ADF4350 and AD8342 for its high performance, as well as an elaborate tuning and calibration process at the factory, which none of the clones do.

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.

Hardware versions

This page is a list of NanoVNA versions and the firmware downloads for each version.

You can identify which hardware version you have using the table below. Select CONFIG > VERSION in the menu on your device. This will show you an about page with the device name at the top which you can look up in the table below.

Before updating your firmware, ensure the correct firmware variant for your hardware version is used, otherwise your device may fail to boot.

Versions / Firmware downloads

Measurement comparison between V2 versions

We have stopped selling non-Plus versions since October 2020. To avoid getting a bad clone, look for V2 Plus4/V2 Plus4 Pro versions only. All V2_2/V2.2 still on the market are clones and some are not compatible with official firmware or software.

Image Name
Firmware support Firmware download Features
V2 Plus4
V2 Plus4 Pro
Latest version

Buy from official store
20220814 latest

20211227 stable
Download (latest)

Download (stable)
  • 4" display
  • 4GHz without using harmonics
  • 90-96dB dynamic range (achievable noise floor)
  • Improved shielding and lower noise
  • Achieves similar results as professional instruments: Comparison with Fieldfox
  • Fast update rate (0.25s for V2 Plus4; 0.16s for V2 Plus4 Pro)
  • Note: V2 Plus5 was renamed to V2 Plus4 Pro.
Latest version

Buy from official store
20230711 Download
  • First portable VNA reaching professional level performance
  • See main page: VNA6000
V2 Plus V2.3
20210726 experimental

20201013 stable
Download (experimental)

Download (stable)
  • 2.8" display
  • Fast update rate (0.5s)
  • Noise improvements
Deprecated /
No longer sold
20201013 Download
  • 2.8" display
  • The earliest NanoVNA V2 hardware version.
  • Obsolete. All V2_2 from 2021 on are clones which are not supported and may be incompatible.

How to update firmware

  1. Switch off the NanoVNA.
  2. Hold down the JOG LEFT button (leftmost of the 3 pushbuttons) and switch on the NanoVNA.
  3. Once white screen appears, release JOG LEFT.
  4. Select the device in NanoVNA-QT under the "Device" menu.
  5. You will be prompted to flash a firmware binary, which you can download from the table above.
  6. The device should automatically reboot after the firmware is flashed. The whole process usually takes 5 - 10 seconds.

If the update takes longer than 10 seconds, there is likely a communication error and it is necessary to restart the update process. Simply switch off the NanoVNA and repeat the steps above.

Interrupting a firmware update will not brick your device, but you will need to flash the firmware again before the device will boot.

Unofficial hardware variants

For SYSJOINT's NanoVNA-F V2, see http://www.sysjoint.com/en/content/?144.html

For BH5HNU's 3GHz NanoVNA-F development, see https://groups.io/g/nanovna-f

Important: Zeenko is using the S-A-A-2 design commercially without permission from the original developers.

Hugen/Zeenko are selling clones of the V2 design without permission, despite being notified by the original developers not to, and have engaged in behavior on the market we believe are intended to harm the original developers.
Unauthorized clones not supported by any firmware/software updates: SAA-V2, SAA-2N, LiteVNA. Please be aware that we will not provide any support or updates for these hardware versions. Thank you for your understanding.

The following are the unofficial (clone) hardware versions that are tested to be compatible with the NanoVNA V2 firmware.

Image Name Firmware support Firmware download
3.2" "black and gold" 20201013 Download
3.2" HDMB "V2 Pro" 20201013 Download
"V2.74" from blackmagic 20201013 Download
2.8" V2 with metal case 20201013 Download