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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 that helps trainers transform certain Pokemon into stronger forms. It is made by a company known as Silph Co. This item is extremely rare and players can acquire it by spinning Photo Disks at PokeStops and Gyms. It provides a set of extra benefits, but it also has an upgrade track that restricts the extent to which an item can be upgraded.