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The Upgrade Item in Pokemon GO The upgrade item in Pokemon GO is a special enhancement item that helps certain monsters in the pocket increase their power. It's an important bridge to mastering the evolution and expanding your Pokedex. The players can upgrade their items by spinning Photo Disks in PokeStops or Gyms seven days straight, as well as through Field Research tasks that are unique to an event. However these items have a low drop rate. Porygon2 is a possible evolution item by using this item In Pokem