Yo I'm new here, is it possible to swiitch between two or more NNIDs on SysNAND with PastaCFW? For example: Switch from NNID1 to NNID2 => Do Something => Switch from NNID2 back to NNID1 => Do something else

I dont think so. its not really possible with emunand as well. i had some trouble while back when i made a new nnid on a new emuand, my original nnid on my orginal emunand stopped working.