The current latest version for on the Nintendo 3DS is v1.2 . This update, released in February 2018, is required for all online features, including Live Competitions and the GTS. Update Details (v1.2)
The pokemon ultra sun update 12 3ds world cia updated represents more than just a bugfix. It is the final, community-backed heartbeat of the 3DS Pokémon generation. When Nintendo shut down the eShop in March 2023, millions of digital copies lost access to their patch servers. It was the homebrew scene, archivists, and dedicated fans who preserved this 1.2 update forever.
This update also addressed an issue where the move Ion Deluge failed to function correctly.