The Nintendo 3DS family of systems—including the original 3DS, 3DS XL, 2DS, New 3DS, New 3DS XL, and New 2DS XL—is . Region locking is a system Nintendo implements to prevent physical game copies from being played on consoles from a different region. For example, a Japanese region copy of Pokémon X cannot be played on an American or European Nintendo 3DS system under normal circumstances. Nintendo's stated reasons for region locking include enabling parental controls and more efficiently delivering region-specific system and menu updates to users.
Emulators handle updates similarly to physical hardware. You must possess the decrypted base game file and the decrypted update CIA file. Open the emulator interface. Navigate to File > Install CIA . pokemon x update 15 3ds world cia region f portable