Jirachi was distributed via the PAL version of the Pokémon Channel game to Pokémon Ruby and Sapphire,
after the player has unlocked the full episode of Pichu Bros. in the Party Panic.
In extremely rare conditions, it is possible to obtain this Jirachi as a shiny.
There's a guide for players who want to obtain their own Channel Shiny Jirachi.
Format Ver.1.0.6-2, Post Updated Date:20180527_1116