Without Version 1.4, players on older patches (1.0–1.3) could not trade or battle with friends on 1.4, nor participate in the final wave of online events.
: If your 3DS is connected to the internet, starting Pokémon Omega Ruby from the HOME menu will often trigger a prompt notifying you that update data is available. Select "Update" to begin the download immediately. Nintendo eShop : Open the Nintendo eShop from your 3DS HOME menu. Search for "Pokémon Omega Ruby Update" or "Version 1.4." Select the Version 1.4 update and tap "Download". Pokemon Omega Ruby Version 1.4 Download
: Updating your game will not delete your current save file. Pokémon Omega Ruby Version 1