Perhaps it's best to ask NanoVNA *V2* specific questions in the NanoVNA *V2* group:
/g/NanoVNAV2? They make it very clear over there that "you will only get support on [that] forum". However, albeit without any personal knowledge w.r.t. to the NanoVNA V2, it would say it's very clear: if you have V2.2 hardware, you need the V2.2 firmware build.
Regards
Christian
