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You can give the Upgrade to Porygon and then trade it to a friend to make Porygon evolve into Porygon2, in order to evolve Porygon2 then give a Dubious Disc to Porygon2 and then trade it to someone and it'll evolve into a Porygon-Z.
To get it first, get porygon. If you have up-grade give poygon it and trade it. It will evolve into porygon2. You need dulboius disc and give it to porygon2. Trade it once more and it will be porygon-z. I did it now i got lv.100 porygon-z and it really helped me to defeat red. He has all the Pokemon as ash, so why is his name red?
porygon does not evolve using levels, instead you have to trade it while holding the item up-grade you capture porygon at level 18-20.
Talk to Professor Oak in the Southwest of Eterna City after beating the Elite Four. He will give you the Up-Grade.Then, let PORYGON hold the Up-Grade and trade it to another person. It will evolve after trading. After this, trade it back to your own game.
in veilstone city in one of the houses in front of galactic HQ if you have a space in your team a man will give you a porygon find a up grade and let it hold the up grade then trade porygon and it will evolve during trade
You trade for it like anyone else
give it to porygon and trade to get porygon-2
Porygon's level dosen't interfere with it's evolution, because Porygon does not evolve through Level Up. You need to trade a Porygon with another Pokemon game. Once the traded Porygon reaches the other game, it will evolve into Porygon-2.
Have a porygon hold upgrade then trade and boom its a porygon 2.
You can give the Upgrade to Porygon and then trade it to a friend to make Porygon evolve into Porygon2, in order to evolve Porygon2 then give a Dubious Disc to Porygon2 and then trade it to someone and it'll evolve into a Porygon-Z.
you give porygon the upgrade then trade it to get a porygon 2 then you give your porygon 2 another upgrade and trade yet again to get a porygon-z
if you give it to a porygon 2 and then trade it it will evolve into a porygon z to get a porygon 2 you must give a upgrade to a porygon and then trade it and it shall evolve!
To evolve Porygon to Porygon2, you will need to have it hold an Upgrade and trade it. You can get Porygon-Z by having Porygon hold a Dubious Disk and trade it.
The Up-Grade evolves Porygon into Porygon2 through link trade. Then Dubious Disk evolves Porygon2 into Porygon-Z.
First, you must trade it while holding an Upgrade to get Porygon 2. Then you must trade it again, but while holding a Dubious Disk, and voila! You have a Porygon Z!
To evolve it into a Porygon2, trade Porygon holding an Up-Grade. To evolve Porygon 2 into Porygon-Z, trade Porygon2 holding a dubious disc
if you get a porygon and you give it the upgrade to hold then you trade it the porygon wil then evolve after the trade