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The Pokemon Upgrade Item - A Special Evolution Item That Helps Trainers Evolve Certain Pokemon Into More Powerful Forms The upgrade item is a unique item for evolution that allows trainers to develop certain Pokemon into stronger forms. Silph Co. produces it. This item is a scarce one, but you can get it by spinning Photo Discs in PokeStops or Gyms. It offers a number of extra bonuses, but it also has an upgrade track that restricts the extent to which an item can be upgraded. Upgrade components U