Simply inserting a blank SD card will not work - it must have the same files as a clean/working NX3200. I strongly suggest you contact technical support to see if they have updated guidance since the original post in 2017.
I've not done it recently, but a few years back, we found that swapping or creating a new clone SD card in an NIx100 altered the NI serial number. Just in case that matters to any licensed software you use! (TP Control site license, CineTouch, likely some others.)