Issues regarding move restrictions, specifically concerning moves like "Sky Drop" or "Dark Void," were patched.

This update, which requires approximately of space, was designed to stabilize specific move interactions:

The most significant change in this patch resolves a crash issue related to four specific moves. If the moves were used during Live Competitions, they could cause the game to freeze entirely.

You need the FBI homebrew application installed to manage and install CIA files.

This update is mandatory to access online features such as the Global Trade System (GTS), Wonder Trade, and Battle Spot. PocketMonsters.net Technical Details Approximately 539 Blocks (roughly 67 MB). 0004000E001B5100 (World/Region Free version). Typically distributed as a file for users with Custom Firmware (CFW). Installation Notes (CFW Users) If you are using a 3DS with and are having trouble applying the update: How to Update Pokémon Ultra Sun and Pokémon Ultra Moon

during Live Competitions would cause the game to freeze or crash. Fixed an issue where the move Ion Deluge did not function correctly. General improvements to gameplay stability. Technical Information (3DS CIA/World)

Do you plan on using like PKHeX with this updated version?

Installing the Pokémon Ultra Moon Update 12.3 for 3DS World CIA is a straightforward process. Here's a step-by-step guide:

Ensure your SD card has enough space (the update is roughly 400-500 blocks).

This is almost always a .

Click it and select . (Note: Do not delete the main game title ID 00040000001B5100 , which is your actual game progress). Step 3: Flash the 1.2 CIA File Return to the FBI main menu and choose SD . Navigate to your cias/ directory.

: Using CIA files to install games or updates is a form of piracy if you don't own the game. It's recommended to purchase games through official channels to support the developers and ensure you have access to official updates and support.