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How to Recycle an Item Upgrader in World of Warcraft Upgrades are enchantments or reforges that can improve the stats of armor and weapons. To upgrade, you'll require a variety of items, including Valorstones and Crests. An item that causes Porygon to evolve into Porygon2. If traded and redeemed, it causes the other Pokemon to become Porygon2. It is a possibility to fail. Recycle It is convenient to recycle an upgrader because it allows players to obtain the items they require for a new upgrade