Why did users hunt for this update? Because without v1.2, players with custom firmware cannot reliably trade with others using the same version, and certain ROM hacks (like Ultra Sun/Ultra Moon Randomizers) require the 1.2 executable to function.
Prerequisites:
Analysis of Pokémon Ultra Sun Version 1.2 Update (3DS, World CIA)
The 1.2 update for Pokémon Ultra Sun is a stability-focused patch primarily aimed at fixing game-breaking bugs in competitive play. While it doesn't add new gameplay features, it is mandatory for any player wishing to use online services like the Battle Spot or Wonder Trade. Update 1.2 Highlights
Move Stability: The patch fixes a critical glitch where using Curse, Forest’s Curse, Power Trick, or String Shot could cause the game to freeze during Live Competitions and QR Code events.
Competitive Reinstatement: These four moves were previously banned from official tournaments due to the crashing risk; following the 1.2 update, they are once again legal for use. pokemon ultra sun update 12 3ds world cia updated
Technical Fixes: Addresses a bug where the move Ion Deluge would occasionally fail to function as intended.
Online Access: You must install this update (which takes up roughly 539 blocks of SD card space) to access any internet-based features. Note for 3DS Modding (CIA Files)
If you are using a CIA (installed game) and the system keeps prompting you for an update even after installing the 1.2 patch, this is often due to a "bad dump" where the internal version numbers were not set correctly during the CIA creation.
Check Region: Ensure the update CIA region (e.g., USA, EUR) exactly matches your game's region, or the console may not recognize it.
Battle Videos: Be aware that after applying the 1.2 update, any Battle Videos saved on previous versions will no longer be playable or shareable. Why did users hunt for this update
For the most stable experience, verify your update status on the title screen; "Ver. 1.2" should be displayed. Detailed patch history and instructions can be found on the Nintendo Support site or Serebii.
This article covers the v1.2 update for Pokémon Ultra Sun Ultra Moon
, which was released by Nintendo to address specific gameplay issues. Critical Bug Fixes in Version 1.2
The primary focus of the v1.2 patch was to resolve a significant technical glitch where specific moves could cause the game to freeze during Live Competitions or when used during QR Code events. The moves affected and subsequently fixed include: Curse Forest’s Curse Power Trick String Shot
Due to these fixes, the Play! Pokémon tournament bans on these moves were officially lifted following the update's release. Update Details and Compatibility Prerequisites: Analysis of Pokémon Ultra Sun Version 1
Size: The update requires approximately 539 blocks (roughly 67MB–68MB) of space on your 3DS SD card.
Online Play: This update is mandatory to access all Internet features, including Link Battles and the Festival Plaza.
Battle Videos: Unlike some previous patches, this minor update typically does not break existing battle videos because it uses the same engine version as v1.1. However, some official notes suggest caution as saved videos may occasionally become unplayable after any software update. How to Install the Update
How to Update Pokémon Sun and Pokémon Moon - Nintendo Support
This report addresses the query regarding the "Pokémon Ultra Sun" update version 1.2, specifically in the context of the Nintendo 3DS ecosystem and the CIA file format. The update in question is an official patch released by Nintendo and Game Freak to address specific game-breaking bugs and to add compatibility with the "Pokémon Bank" service. While the official Nintendo 3DS eShop has closed, the update file remains essential for a complete gameplay experience and is widely circulated within the preservation and modding communities in CIA format.
Solution: Yes, but you must re-patch. Update 1.2 overwrites the code.bin. After installing the v1.2 CIA, re-apply your LayeredFS mods via Luma’s locale.txt and code_sections folder.