something similar is happening to me, my nintendo does not recognize my micro sd in exfat or fat32 asks me to fortmate from the switch and when I format from the nintendo then the pc does not recognize the card
For anyone who does not know. FAT32 has a 4GB File Size Limit and cant hold files bigger than 4GB. SX OS does not support Splitted XCIs so the only way you can play bigger Games than 4GB is going with exFAT
Q: Which file format does SX OS support? What about split files?
A: We support both FAT32 and exFAT.
SX OS will also try to look for split files in the form of "filename.xc0" "filename.xc1" "filename.xc2" and so on to support ROMs larger than 4GB on FAT32.
You can totally use fat32... Do you guys even read their FAQ?