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World of Warcraft Item Upgrade The upgrade of the item was first introduced in Generation II. This special item allows Porygon to transform into Porygon2 while being traded or in possession. It can be inserted into armor, weapon gear and trinkets to give a bonus effect or increase its attribute value. However, most upgrade components require the item to be at a certain level before it can be slotted into. Recycle points Recycle points are a form of item that can be used to upgrade items. You can get