In some cases the integrated bootloader of the miniVNApro is corrupt and so for the firmware update via vna/J is not working.

I've updated the user guide for vna/J.

The firmware update function is now available, even if no calibration data is loaded. This update relates to this post.

Please check it here.

Version 3.1.19 of vna/J is released.

  • The application JAR can be downloaded from here as usual.
  • Firmware update is now possible, even no calibration is available.
  • Size of language selection window corrected. Window is now also resizable

There were some user reports, that miniVNApro with firmware <2.6 is only working with vna/J < 3.1.15.

This is due to a miniVNApro firmware bug for versions <2.6.

  • miniVNApro with firmware < 2.6 is only working with vna/J up to version 3.1.14
  • miniVNApro with firmware = 2.6 is working with all versions of vna/J

Firmware 2.6 is mandatory using the extender and/or vna/J > 3.1.14.

To use all version of vna/J > 3.1.14, you have to update the firmware of your miniVNApro to the newest firmware.

It's up to you ...

Version 3.1.18 of vna/J is released.

  • The application JAR can be downloaded from here as usual.
  • There s only one small change in 3.1.18 - |Z| is calculated correctly when using port extension

Here is wish-/feature -list for the upcoming version of vna/J:


You can buy the author a beer to support the further development of vna/J.

Please use this PayPal link.

Many thanks in advance for this donation!


You can contact me by email icon or 

2014 CW (Morse Telegraphy) was added to the German Nationwide Inventory of Intangible Cultural Heritage.

Logo