Players often refer to it as because the 3DS system menu listed updates sequentially by number (update 1.0 → 1.1 → 1.2 → 1.3 → 1.4), and the final two digits “14” appeared in some system menus, especially on homebrew or region-modified consoles.
The primary purpose of Version 1.4 is to maintain compatibility with Nintendo’s online infrastructure. Without this patch, your copy of Omega Ruby will be unable to access several key features: pokemon omega ruby update 14