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Diablo 4 Item Upgrades The upgrade to an item allows players to raise the level of their equippable items such as weapons, armor and trinkets above a certain threshold. They can be purchased at any item upgrader NPC using the appropriate currency. Upgrade components are integrated into equipment to provide attributes bonuses and other effects. The majority of these upgrades are slot-restricted, but a few are universal. Rerolling A player can reroll an upgrade to an item in Diablo 4. This is done through the Level Up mechanic, which pauses the