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Beware of underperforming clones

As of May 2022 all non-Plus/Plus4 hardware are clones (we have stopped producing older versions since October 2020), many of which perform badly due to using lower quality or salvaged parts, and users have reported software/firmware incompatibility. See official store and look for V2 Plus4/V2 Plus4 Pro 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 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 V2.4
Latest version
Buy from official store
20220301 latest

20211227 stable
Download (latest)

Download (stable)
  • 4" display
  • 4GHz without using harmonics
  • 90dB dynamic range (see comparison)
  • 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.
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.

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.

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

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.