What is UP-GRADE used for in Pokemon fire red?Also how do you use it?
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It is used to Evolve Porygon.
It is used to Evolve porygon into porygon2.All you have to do is Trade porygon while hes holding it.
A up-grade give it to ploygon then Trade it it would evole.
Give the Up-Grade to Porygon(buy one at the Game Corner for 9,999 coins) then Trade it to a friend. Porygon will Evolve into Porygon2. They look basically the same, Porygon2 is more round, though. Lugia_Dude
The up grade is for evolving porygon into porygon 2 with a Trade. If you trade a porygon holding an up grade it will Evolve into porygon 2.
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