To download the version 1.4 update for Pokémon Omega Ruby, you can still use official Nintendo services even after the 3DS eShop's general closure. This update is necessary for all online features, including trading and battling. Official Download Methods
Automatic Prompt: Ensure your 3DS is connected to the internet. When you highlight the Pokémon Omega Ruby icon on the HOME Menu, a prompt should appear stating an update is available. Tap Update or press Y to begin the download. Manual eShop Search: Open the Nintendo eShop from your HOME Menu. Pokemon Omega Ruby V1.4 Download
Note: There is no official "V1.4" from Nintendo that changes gameplay. If you are looking for the latest official patch, that is Ver. 1.4 (which mainly fixed online bugs). But most online searches for "Pokemon Omega Ruby V1.4 download" are chasing the enhanced fan-made version. To download the version 1
Evolutions that normally require trading are changed: When you highlight the Pokémon Omega Ruby icon
Pokémon Omega Ruby Version 1.4 is the final official stability and compatibility update released by Nintendo for the 3DS remake of the Hoenn region. While it does not introduce major new story content, it is essential for modern emulation and previously served as the mandatory gateway for all online features. BREATHEcast Version 1.4 Technical Breakdown
: Fixes bugs that caused the game to freeze or crash during online battles and trades. General Stability