delete the code
only event, hack or action replay
You can't.
i dont know but the action reply i get you can choose the level of jirachi and i can get anywhere i have three
You cant, only by using action replay.
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you get jirachi by walking(so its roaming) or use game shark or action replay
u cant u can only get a shiny jirachi with action replay or gameshark
no, you will not unlock anything
You can't at least if you are talking about Jirachi...
Action Replay/Gameshark codes or you had to pre-order Pokemon Colleseum and use the Bonus Disk.
Jirachi cannot be caught in the wild. You'll need to migrate it from the Generation III games, trade for it, or use an Action Replay.
You have to get it from Action Replay or you need to trade, or Mirage it from the older Pokemon games into the Pal Park.