You need the game Pokemon Channel for the gamecube. After unlocking the full version of The Pichu Bros. in Party Panic, Jirachi will appear, and the mini-movie will be shown above the campfire. It can be downloaded onto a version of Pokémon Ruby and Sapphire. Once its on your Pokémon Ruby or Sapphire, you can get it through the Pal Park onto your Pokémon Diamond.
Yes. Use an Action Replay
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 can't.
Action replay
No
u cant u can only get a shiny jirachi with action replay or gameshark
you trade it or use action replay
U HAVE TO MIGRATE OR ACTION REPLAY
I don't know about the Action Replay or Multitype but my friend got a jirachi fro GTS or you could migrate it. The final option for everything you asked ( and more) is to use Pokesav.
You can't at least if you are talking about Jirachi...
There is no cheat you can only battle him once!
there are none