>>23195994Yeah, but that's not he asked (or just phrased poorly). I understood he either thought the game updates were saved on the card, or update on another 3DS by putting the sdcard there. Even on physical games the updates are still stored in the sdcard.
But yeah, if you have an unupdated 3DS your best bet is inject there with your cartridge. If you have eShop version, commit sudoku.