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Diablo 4 Item Upgrades Upgrades to items allow players to raise the level of equippable items such as weapons or armor, as well trinkets to a certain level. They can be purchased at any upgrader NPC with the appropriate currency. Upgrade components are inserted into equipment to offer attributes bonuses and other effects. The majority of these upgrades are slot-restricted however some are universal. Rerolling In Diablo 4, a player can roll a new upgrade to an item. This is accomplished by using the Level Up feature, which pauses your game and displa