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Upgrade
The Upgrade causes Porygon to evolve into Porygon2 when Porygon is traded holding the item. In Generations 2-7, this item's name was formatted as Up-Grade.
Game descriptions
- Ruby, Sapphire, Emerald:A peculiar box made by SILPH CO.
- FireRed, LeafGreen:A transparent device filled with all sorts of data. It is made by SILPH CO.
- Diamond, Pearl, Platinum, HeartGold, SoulSilver:A transparent device filled with all sorts of data. It was produced by Silph Co.
- Black, White, Black 2, White 2:A transparent device filled with all sorts of data. It was produced by Silph Co.
- X, Y, O.Ruby, A.Sapphire:A transparent device somehow filled with all sorts of data. It was produced by Silph Co.
- Sun, Moon, Ultra Sun, Ultra Moon:A transparent device somehow filled with all sorts of data. It was produced by Silph Co.
- Sword, Shield, B.Diamond, S.Pearl:A transparent device somehow filled with all sorts of data. It was produced by Silph Co.
- Scarlet, Violet:A transparent device somehow filled with all sorts of data. It was produced by Silph Co.