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How to Upgrade in Pokemon GO Upgrade is one of the most sought-after items of Pokemon GO. It allows trainers the chance to transform Porygon2 into Porygon and advance in their Pokedex. It is a rare item, but can be found by spinning a Photo Disk at a Pokestop, or as a prize for special occasions. But what does this item actually do? Components Upgrade components are objects that can be put into weapons, trinkets, or gathering tools in order to give an additional bonus or effect when the item is used. They are