For users on custom firmware (CFW) using ".cia" (CTR Importable Archive) files, the following metadata is relevant for ensuring compatibility with the "WORLD" (Region Free) release:
The primary objective of Update 1.2 was to resolve several high-priority bugs that specifically affected Pokémon moves and competitive play. Pokemon Ultra Moon- Update 1.2 3DS -WORLD- CIA ...
: Resolved a bug where the move Ion Deluge failed to function correctly. For users on custom firmware (CFW) using "
Nintendo distributed updates as CIA files under the hood. Using custom firmware, you can dump the 1.2 update from your console or download the decrypted update CIA (only from your own console) to apply to a cartridge without using Nintendo’s servers. Using custom firmware, you can dump the 1
Finally, the file began to trickle down: Pokemon.Ultra.Moon.Update.1.2.WORLD.CIA . 256 megabytes. Small by today’s standards, but in the era of the 3DS, a significant patch.