: Highlight the Pokémon Ultra Sun file, press A , and select Install and Delete CIA (deleting the source file saves valuable SD card space).
The most prevalent theory regarding "Ultra Sun v12" is a case of misattribution involving one of the most popular ROM hacks for the game: .
Are you setting this up on a or an emulator (like Citra)?
According to Serebii and Bulbanews , the following fixes were implemented: pokemon ultra sun v12 cia exclusive
Understanding Pokémon Ultra Sun v1.2 CIA Exclusive Files: A Complete Guide
: Installing a custom ROM hack CIA will often overwrite existing save data unless a backup is made first using tools like Checkpoint
High-attack Rock-types resurrected from the Skull Fossil. : Highlight the Pokémon Ultra Sun file, press
Players can easily assemble a 100% Form Zygarde by collecting cells.
Sturdy Water/Rock-types from the Cover Fossil.
While CFW is region-free, it is best to match the CIA region with your save data to avoid corruption. How to Verify Your Version According to Serebii and Bulbanews , the following
If you are downloading the v1.2 exclusive version, you are getting the full Alola experience, which includes:
This is the most critical technical distinction. Most Ultra Sun mods are distributed as .ips or .xdelta patches that require a clean, decrypted ROM of Ultra Sun . However, the v12 “Exclusive” is different for three reasons: