32 is really starting to limit me, upgrading to 64GB would really help, especially since I started backing up my carts to CIA. Nintendo officially states that the 3DS only can go up to 32GB, but I have had a lot of people tell me that 64GB work fine. I found this a little odd since cards over 32GB are a different standard than cards that are 4-32GB, and when my friend tried it their 3DS could not recognize the card. (Yes, it was reformatted properly to FAT32). Which is why I am asking here. Do they work, or no? Or is it hit-and-miss? And if they work, could they cause problems later on? The thing I am most worried about is it working for a while, bit then deleting or corrupting data later on.