Suport for SV6301A / SV4401A

[oxoocoffee]

Hello.

I updated your app from AppStore and running version 1.3.1 using SV6301A VNA.
I connect to it as NanoVNA-F V2. It gets the band range ok. I can perform scan and it looks good.
When I take a screenshot I get corrupted screen like this. I also have NanoVNA-F V3 which I will try to run and will report my findings. Would it be possible to add the devices to the menu list after we get it working?

73.

[DL2RUM]

There is no command for the screenshot in my manual for this device. So I don't know how it works.