The primary official way to update was via the . Since the 3DS eShop has closed for new purchases, you can still typically redownload updates for games you own.
22 Apr 2015 — Ver. ... Fixed the issue in which the game freezes during the end credits after entering the Hall of Fame in certain game data. Nintendo Support Download Pokemon Omega Ruby 1.4
: Once complete, the title screen should display "Version 1.4" in the bottom right corner. Manual Method The primary official way to update was via the