Do not confuse the Update CIA (usually 100-300MB) with the Base Game CIA (1.7GB). The keyword "update 14" specifically means the small patch, not the full game.
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For those running the USA version of the game via a CIA file on a homebrewed 3DS, updating through the standard Nintendo eShop is possible but can sometimes be finicky depending on your setup. Do not confuse the Update CIA (usually 100-300MB)
If you need to start over after updating, press Up + B + X simultaneously on the title screen. If you need to start over after updating,
Released by Nintendo and Game Freak, Patch 1.4 is primarily known for making the mythical Pokémon
Installing a European update on a USA base game will result in an error, and the game will not launch.
For standard systems, the most reliable method is through official channels: Nintendo eShop: You can download the update directly from the Nintendo eShop