I have been an owner of a NanoVNA SAA-2N for some time now and have upgraded it several times with firmware developed by DiSlord with excellent results.
I have just recently ordered a NanoVNA-H4 to experiment with the TinyPFA firmware developed by Erik. There will be times when I wish to return this NanoVNA-H4 to its original functionality and because I have had experience with DiSlord's firmware, I would like to utilize it. In looking at his Github offerings, he has NanoVNA-H4-SI and NanoVNA-H4-MS versions of 1.2.14 available for download. I do not understand which version I should use when I want to restore my NanoVNA-H4's VNA functionality.
Any clarification would be greatly appreciated!
Ed, K0KC
