If you give It to the pokemon porygon and trade it then it will evolve
well first you gotta get a porygon. then let it hold the upgrade. then trade it and you'll get porygon 2. trade again with dubious disc to get porygon z. Only Porygon needs Upgrade and you need that upgrade to trade for it to evolve. You need to trade it together with the upgrade for it to evolve.
You need to trade a Porygon holding an Upgrade. You get an Upgrade from Silph Co building.
if your talking about the item called upgrade than you can use it evolve porygon into porygon 2 when you link trade it.
In order to evolve Porygon into Porygon2, you must give it the Upgrade item and then trade it to another game.
the upgrade is used to evolve porygon into porygon-z
you have to have a upgrade and then trade it
trade while holding the upgrade
If you give it to porygon and trade it, porygon will evolve
If you give It to the pokemon porygon and trade it then it will evolve
well first you gotta get a porygon. then let it hold the upgrade. then trade it and you'll get porygon 2. trade again with dubious disc to get porygon z. Only Porygon needs Upgrade and you need that upgrade to trade for it to evolve. You need to trade it together with the upgrade for it to evolve.
You get it from professor oak it allows one rare Pokemon to evolve. And the answer before this was the real life type of upgrade :P
You need to trade a Porygon holding an Upgrade. You get an Upgrade from Silph Co building.
if your talking about the item called upgrade than you can use it evolve porygon into porygon 2 when you link trade it.
In order to evolve Porygon into Porygon2, you must give it the Upgrade item and then trade it to another game.
For Porygon to evolve you have to trade it whilst it is holding an 'upgrade'. See related links for more info.
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.