Yes, I have 2 cards that I've tried. First is a 32gb fat32 and the other is a 16gb fat32. The unit sees the card as it's putting the encryption files on the card.
I downloaded the 2.8 version for both the SI + GPS G3N and DI + GPS G3N. I tried each one on each card individually and nothing happened. Strangely they are the same size files if they don't work on each other.