Pokémon Ultra Moon Update 1.2: Essential Guide and CIA Fixes
If your system can still access the Nintendo eShop , you can download the update directly from the Home Menu. Homebrew CIA Method
The Ultimate Guide to Pokémon Ultra Moon Update v1.2 : Everything You Need to Know
: This patch is mandatory for all online functions and official Play! Pokémon video game tournaments. How to Ensure the Update Works
Third, matters. The base game CIA must be installed before the update. If a user attempts to install the update first, or if they install a newer update (v1.2) over an older one (v1.1) without the middle patch, the 3DS’s system software may register conflicting title versions, causing a crash on launch. The "work" of Update 12 often involves uninstalling all existing updates, rebooting the console, installing the base game, and then applying the update CIA. pokemon ultra moon update 12 cia work
Without this update, your game remains at (base cartridge or dump). Many custom ROM hacks (like Pokémon Ultra Sun & Moon - Photonic Sun/Prismatic Moon ) require the v1.2 update as a base before patching.
Version 1.2 was released primarily to resolve game-breaking bugs that occurred during competitive play. According to PocketMonsters.net , the patch fixes a specific freezing glitch involving the moves Curse, Forest's Curse, Power Trick, and String Shot during Live Competitions. Approximately 539 blocks (~67 MiB).
Prevents rare save file corruption during the Elite Four challenge.
The Nintendo 3DS homebrew ecosystem relies heavily on CIA (CTR Importable Archive) files to install games, updates, and DLC directly to the system home menu. For Pokémon Ultra Moon , installing the Version 1.2 update is essential to fix critical gameplay bugs, patch online stability, and ensure compatibility with modern multiplayer mods. Pokémon Ultra Moon Update 1
You need the latest version of the FBI title manager app installed on your Homebrew menu.
| Error / Issue | Most Likely Cause | Step-by-Step Solutions | | :--- | :--- | :--- | | / Installation Fail | Corrupted CIA file, insufficient SD card space, or an issue with the CFW’s signature checks. | 1. Check SD card space : Ensure you have at least double the file size of the CIA available (A 3.4 GB game requires over 7 GB free to install. The 68 MB update is small, but lack of space is a common root cause for all CIA failures). 2. Re-download the CIA : The file may be corrupt. Find it from a different, trusted source. 3. Update FBI : Ensure you are on the latest version of FBI (2.6.1). | | Black Screen / Boot Loop / Crashes on Launch after installing the update | Missing "seed" for the game. The 3DS requires a cryptographic seed to launch certain titles, often needed for games obtained via CIA. | The most common fix is to import the seed via FBI : • Launch FBI . • Navigate to Titles . • Find and select Pokémon Ultra Moon in the list. • Select "Import Seed" . • Your 3DS must be connected to the internet. This will fetch the correct key from Nintendo’s servers. | | "This software requires an update to the latest version to proceed" | The base game is a very early version and the system is still detecting it as outdated, even after installing the 1.2 CIA. The update may not have been applied correctly or is the wrong region. | 1. Verify Region Match : The update CIA's region (USA, EUR, JPN) must match the region of the base game CIA. 2. Reinstall the update : Use FBI to uninstall the update (via the Titles menu) and then reinstall the 1.2 CIA cleanly. | | Online Features / Pokémon Bank Not Working | The 3DS's online services have been officially shut down. | This is not a bug. As of April 8, 2024, Nintendo has discontinued online functionality for all 3DS family software, including Pokémon Bank, making online trading and battling impossible on official servers. |
A strange bug was causing games to freeze during Live Competitions and QR Code events when these specific moves were used. The 1.2 update fixed these crashes, allowing the moves to be unbanned. It also addressed a minor glitch where Pokémon received through Mystery Gift wouldn't register in the Pokédex.
Here's a more detailed list of changes and fixes in Update 12: How to Ensure the Update Works Third, matters
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For users with modified systems, the update can be installed as a .cia file using homebrew tools. Official Method
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