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What is an Upgrade Item in Genshin Impact? Upgrade items are special items that help certain Pokemon evolve. They can be obtained by spinning Pokestop discs, or as rewards for events that are related to evolution. They can be added to trinkets, armors, weapons and gathering tools in order to boost effects or stats. Some upgrades have a cosmetic effect. Upgrade components Upgrade components can be inserted into weapons, armor and trinkets to provide an added bonus or effect while the equipment is ut