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World of Warcraft Upgrades Upgrades are parts that can be added to equipment in order to provide various bonuses. They range from stat boosts to increased proc chances of amazing equip effects. The item upgrade system works slightly differently than what you might be familiar with from other MMORPGs. This guide will explain the basics of how it works as well as some tips and tricks. Rerolling When visiting an upgrader for items the player can upgrade items like weapon