If you downloaded a Region-Free base game but a region-specific update (or vice versa), the 3DS will throw an error.
Alternatively, if you're using a tool like Anemone or using the built-in support of your CFW:
Highlight the update file, press , and select Install and delete CIA (this saves SD card space).
As a final note, you will find links on Reddit (r/3dspiracy, r/ROMs), Internet Archive, and various GitHub gists. However, avoid: pokemon ultra moon update 12 cia work
: Your save data remains compatible; however, Battle Videos saved prior to the update will no longer be playable or shareable. How to Install Version 1.2 (CIA Method)
Having trouble with multiple Pokemon Ultra Sun CIAs : r/3dspiracy
Browse your computer's storage, select the Pokémon Ultra Moon 1.2 Update CIA file, and click . If you downloaded a Region-Free base game but
If you still receive update prompts, or the game fails to boot, try these solutions, often discussed in community hubs like r/3dspiracy. 1. The "Update Notice" Loop (Incorrect CIA Dump)
The difficulty implied by "work" arises from several technical hurdles. First, updates are delivered as —they only contain changed code relative to the base game. If a user has a modified base CIA (e.g., a ROM hack or a trimmed dump), an official update CIA may fail to apply, leading to a "Failed to install" error in FBI. Making it "work" often requires using a clean, verified base dump of Ultra Moon .
: If the "Update Required" message persists, delete the existing update data and reinstall a verified v1.2 CIA from a reliable source. Bypassing Patching Conflicts However, avoid: : Your save data remains compatible;
[SD Card Root] └── [cia] └── Pokemon_Ultra_Moon_Update_v1.2.cia <-- Install via FBI Troubleshooting Common Errors
:
In FBI , go to Titles > Pokémon Ultra Moon > Import Seed . This often fixes games that crash on startup or refuse to load update data.
A corrupted previous installation can cause a region or license mismatch.