Many ROM sites and forums abbreviate "1.2" as "12" due to filename character limits (e.g., UltraMoon_v12.cia ). The official version is 1.2 , not version 12.0.
In the realm of CIA piracy or archival, "3ds World Edition" typically serves as a . Installing a "World" CIA—paired with the 1.2 update—generally ensures the game boots without region errors on your CFW 3DS, though Luma3DS usually bypasses region locks automatically. pokemon ultra moon update 12 3ds world cia