You installed Update v1.2 before installing the base game, or you installed a corrupted CIA. Fix:
: Launch the game and look closely at the bottom-right corner of the title screen. It should clearly display Ver. 1.2 . Method 2: Installing via hShop (Recommended) pokemon ultra moon update 12 cia work
Press and select Install and Delete CIA (this installs the update and deletes the installer file to save SD card space). You installed Update v1
This update primarily addresses technical glitches that hindered competitive and online play: The CIA installation process is stable, reversible, and
While the golden age of online battling is over, the v1.2 update remains a critical component for local wireless play, ROM hacking, and save editing. The CIA installation process is stable, reversible, and safe as long as you follow the FBI method outlined above.