Update 1.4 for Pokémon Omega Ruby (USA region) is a system patch for the base game, typically distributed as a CIA file for use with custom firmware (CFW) on a Nintendo 3DS. This update is not the full game — it’s a patch that must be installed after the base game CIA.
Nintendo’s official changelog for v1.4 (released in 2016) includes:
Note: Pokémon Omega Ruby’s last major content update was v1.3 (which added the Eon Ticket and some event distributions). v1.4 is purely a maintenance patch.
Disclaimer: This guide assumes you own a physical copy of Pokemon Omega Ruby and a Nintendo 3DS with custom firmware (Luma3DS). Modifying your 3DS voids the warranty and may carry risks. Proceed only if you understand the legal and technical consequences.