The Netherite Upgrade Smithing Template gates Diamond-to-Netherite upgrades and drops in Bastion Remnant treasure chests.
Guide
Travel through the Nether and search for a Bastion Remnant; the treasure-type bastion always contains one Netherite Upgrade Smithing Template in its central treasure chest.
Place or find a Smithing Table in a village blacksmith or craft one from two Iron Ingots and four Wood Planks, then right-click it to open the upgrade interface.
Put the Netherite Upgrade Smithing Template in the top slot of the Smithing Table; this slot is reserved for the upgrade or trim template.
Place a Diamond tool, weapon, or armor piece in the middle slot and one Netherite Ingot in the bottom slot to complete the recipe.
Drag the upgraded Netherite item out of the result slot; the Netherite Upgrade Smithing Template is consumed and the Diamond item keeps its enchantments.
Duplicate the Netherite Upgrade Smithing Template by combining it in the Smithing Table with seven Diamonds and one Netherrack, which returns two templates and lets you upgrade a full Netherite set.
The Netherite Upgrade Smithing Template generates in Bastion Remnant chests in the Nether, with a guaranteed copy in the treasure-type bastion's central chest and high odds in the housing, hoglin stables, and bridge bastion variants.
Place the Netherite Upgrade Smithing Template in the top slot of a Smithing Table, a Diamond tool or armor piece in the middle slot, and one Netherite Ingot in the bottom slot to produce the matching Netherite item.
The Netherite Upgrade Smithing Template cannot be crafted from raw materials, but it can be duplicated by combining one template, seven Diamonds, and one Netherrack in a Smithing Table to get two copies.
Yes, the Netherite Upgrade Smithing Template is consumed every time the Smithing Table completes a Diamond-to-Netherite upgrade, so one template equals one upgraded tool, weapon, or armor piece.
The Netherite Upgrade Smithing Template was added in Java Edition 1.20 'Trails & Tales' and the matching Bedrock Edition update, replacing the older template-free Netherite upgrade recipe.