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Diablo 4 Item Upgrades Item upgrades allow players to increase the item level of equippable items like weapons, armor, and trinkets to a certain level. They can be purchased at any upgrader NPC using the appropriate currency. Upgrade components are integrated into equipment to provide bonus effects and attribute bonuses. The majority of these upgrades are slot-restricted but some are universal. Rerolling A player can roll an upgrade to an item in Diablo 4. This is done through the Level Up feature, which stops your game and shows four randomly chosen upgrades. Th