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https://yamcode.com/why-all-th....e-fuss-over-item-upg
What is an Upgrade Item in World of Warcraft? Upgrade items are items that can be added to armor, weapons and trinkets to increase their stats. It is obtained by completing certain keystones of high-tier dungeons. Trainers will need an Upgrade to develop Porygon into its final form, Porygon2. These special items that evolve are extremely rare and cannot be found spinning PokeStops or Gyms. Components In the field of computer technology it is a