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How to Upgrade Items in Pokemon GO Upgrade is among the most sought-after items of Pokemon GO. It gives trainers the opportunity to transform Porygon2 into Porygon and progress in their Pokedex. This item is scarce, but can be found by spinning a Photo Disk at a Pokestop, or as a prize for special events. What can this item do? Components Upgrade components are objects that can be slotted into weapons, trinkets, or gathering tools in order to give an added bonus or ef