Hi Bjorn
I found the following link see if this may help you. It says it's nono VNA2 official website but I don't know about it.
I don't own any of the nano VNAs. I simply searched on the Google with the keyword "NanoVNA V2" and came up with the above link. Please do some search on Google and YouTube.
Good luck,
Sohail ve3itu.
