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Beware of cheap underperforming clones

As of November 2021 all non-Plus/Plus4 hardware are clones (we have stopped producing older versions since October 2020), many of which perform badly, and users have reported software/firmware incompatibility. If a clone is selling for much cheaper than the official store it likely uses salvaged or reject parts and will not meet specifications. See official stores and look for V2 Plus/Plus4 versions only to avoid getting a bad clone.

Hardware versions

This page lists all NanoVNA V2 (S-A-A-2) versions and firmware downloads.

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 Plus and Plus4 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
CONFIG>VERSION
Firmware support Firmware download Features
V2 Plus4 V2.4
Latest version
Buy from official store
20210726 experimental

20201013 stable
Download (experimental)

Download (stable)
V2 Plus V2.3
20210726 experimental

20201013 stable
Download (experimental)

Download (stable)
  • 2.8" display
  • 2x faster sweep (200 points/s)
  • S11 and S21 noise improvements
V2.2
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.

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

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

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

Hugen/Zeenko are still producing and selling illegal clones of the V2 design despite being notified by the original developers not to, and have engaged in behavior on the market meant to harm the original developers. See here for more details.
The designs are under a non-commercial license, so the following are illegal clones: SAA-V2, SAA-2N.


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

Important: LiteVNA is an illegal product that copies S-A-A-2's design without permission, with exaggerated specifications. The original V2_2 design was open sourced to help hobbyists learn, but Zeenko's actions force us to close source later designs. Please reconsider supporting this vendor.

How to update firmware

  1. Switch off the NanoVNA V2 main unit.
  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.