Seeing as the red card is what loads 3DS ROMs, why does it matter? If an update is released for later firmwares, you'll most likely need to re-run it at the time it's released so running it ahead of time isn't doing the average person much good (especially since the change is lost on a restart of the system anyways), and while the blue cart is a DS flash cart... there's a lot more out there that likely do way more anyways.does the whole system run on only 4.1-5? or only the red card?