The only way you can get jirachi is through a special bonus disk for Colosseum.
You can't get jirachi in firered.
I do not want cheats that do not work
It is "Jirachi" and you have to get it in the CD you get when you Pre-Order Pokemon Colliseum.
You can't unless you cheat.
You must pre-order Pokemon Colosseum and a Jirachi download disk comes with it. Then, you must beat Colosseum and trade the Jirachi.
One of my friends told me you can get jirachi at the end of Mt. Moon and I have tried but I can't figure out how to get there. I do believe there is a jirachi in heart gold version because there are sinnoh Pokemon in it and I have found mewtwo. In gold version however, jirachi cannot exist for gold version was made before jirachi was. I wish you luck in finding the legendary jirachi and other Pokemon!
Chinchou is not available in Pokemon Firered Version. You can only get it by trading from Pokemon Ruby / Sapphire / Emerald Version.
use that gameshark user.
There is no "Pal Park" in Pokemon Firered Version.
Currently, Jirachi is not obtainable through traditional methods in Pokemon Ruby Version.
firered and leafgreen version
Get it from Pokemon emerald.