I just recently bought a New 3ds LL off ebay. The seller put Luma3DS firmware on it for it to be region free but still has the 4gb MicroSD inside. I plan on swapping the MicroSD out for something larger but was wondering if I will have to reapply the custom firmware again? I know when I update the motherboard bios on a PC it is saved to the internal mobo memory so wasn't sure if 3DS custom firmware was the same deal or if I will have to go through the process on the new MicroSD I will order.