It's on route 225. Close to the survival area keep going from the survival area until you see a pond, go all the away across, and then down some stairs. It should be there.
The Up-Grade Evolvs Porygon When You Give It To It And Trade. You Can Get Porygon From A Woman In Veilstone. When You Get A Porygon2 (If You Have It) Give It The Dubilous Disc And Trade Again And You Get Porygon Z. Hope I Helped :)
-mongmong908♥♥
Attatch it to Porygon2 and trade it- it evolves into PorygonZ
trade it while holding a dubios disc
Route 225 (the route north of the battle area)
you have to have a us bonus disc of Pokemon collosseum trade it to ruby sapphire or emerald but if you have Pokemon diamond or pearl you will have to migrate.
you Trade a porygon2 while holding Dubious Disc. you Trade a porygon2 while holding Dubious Disc.
HM 1 Cut how dont you know
Pokemon diamond
Sorry, you cannot obtain Jirachi in Diamond Version without the use of cheats. You can obtain it via Pokemon Colosseum pre-order disc though.
There are 2 ways. The first and legit way of doing it is to find the bonus disc for the American Pokemon Colosseum and get it that way by trading it to a GBA Pokemon game and transfer it to Diamond and the other way is to use and Action Replay.
On Pokemon Diamond, Porygon evolves not by level, but by trade while holding the upgrade. Then you trade the newly evolved Porygon-2 with the Dubious Disc and receive a Polygon-Z, which is the final evolution of the Normal type Pokemon. And you like pee-pee.