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The Upgrade Item in Pokemon GO The upgrade item in Pokemon GO is a special enhancement item that helps certain creatures in your pocket increase their power. It's a key way to master evolution and expanding the Pokedex. Players can upgrade their items by spinning Photo Discs in PokeStops or Gyms for a whole week and also by completing Field Research tasks that are specific to an event. However, these items have a low rate of dropping. Porygon2 can be evolved using this item In Pokemon Go players can use