There are two ways to patch 3DS games: a "Quick Patch" (mostly for emulators) or a "ROMFS Patch" (for playing on real hardware). The most common method provided by the team is applying a patch to the ROM file directly.
As an optional exclusive addition, the translation package comes with a separate .ips patch that doubles experience and part-drop rates. This is not a cheat code—it is a rebalancing tool exclusive to the English release, acknowledging that Western fans have less time to grind through 40+ hours of random encounters. medarot 8 english patch exclusive