This thing crapped out on me before and I made a post about it. However I forgot about the thing for a while and now I'm hoping I can get the thing functioning. Immediately after I post this I'll try fixing it myself while refreshing the page once in awhile. Firmware is set up, SD Card formatted to FAT32 (As the User Manual says). When the cart is inserted the 3DS doesn't even acknowledge it. I will say that putting it in and removing it is surprisingly difficult. I have to use a little bit of force every time.