Things You'll Need
Instructions
Get the "Colosseum" bonus disc. This was shipped to all players who pre-ordered the game in 2003. Check auction websites such as eBay to find a copy.
Load your "Pokemon: Ruby" or "Sapphire" game. Go to a Pokemon Center. You'll find one in every city in the game.
Open your party menu and dismiss a Pokemon. You need at least one open space in your party.
Turn off your Gameboy Advance.
Insert the "Colosseum" bonus disc into your Gamecube. Turn it on.
Push the right arrow key on the main menu. This selects the option "Special Gift
Jirachi." When you select it, the screen tells you to connect your Gameboy Advance to your Gamecube. Do so using the link cable.
Turn the Gameboy Advance on when the screen prompts you to do so. Wait for the loading process to complete. Turn off the Gamecube.
Open your party menu. Jirachi is now in the empty spot.