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How to Upgrade Items in Pokemon GO The Upgrade is among the most important features in Pokemon GO. It allows trainers the chance to transform Porygon2 into Porygon, and to progress in their Pokedex. While this item is quite uncommon, players can get it by spinning a photo disc at a Pokestop or as a reward during some special occasions. But what exactly does this item actually do? Components Upgrade components are items that can be incorporated into trinkets, weapons, or gather