Finally decided to switch from a 4GB card to a 32GB one, people said I simply had to copy and paste all the files from one to the other. Problem is after doing that (After doing the recommended formatting in FAT32 on the new card), my 3DS doesn't want to turn on anymore. The little blue light shines for a few seconds and then turns off, managed to turn it on without the SD card but once I open Luma to check if everything is fine it says "SD card was removed, press any button to reboot".
Halp?
Halp?