Hello. I am getting the No SD/TF card inserted problem with a brand new R4. But it is not my microsd because I have another DS with another R4 and when I test the micro sd with it, it works fine. I think the R4 is damaged.
mine randomly says that if I added/take off stuff of the micro sd card. all i need to do to fix it is just take it out of the ds and put it back in