How to upgrade an infusion in an item in Guild Wars 2

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I have an ascended piece of equipment with a defensive infusion slot, which currently contains a +3 agony resistance infusion. I have now crafted a +6 agony infusion and I would like to replace the current one with this new, better one.

However, agony infusions can only be applied to unused defensive infusion slots. How can I replace an existing defensive infusion with a new one?

Best Answer

agony infusions can only be applied to unused defensive infusion slots.

This is not true. Just like upgrades, infusions can overwrite other infusions normally. The problem you are having is that you are trying to place a +6 Agony Infusion into a Defensive Infusion Slot, which is impossible. +X Agony Infusions can only be placed in agony infusion slots (emphasis mine):

An Agony Infusion is a type of Infusion upgrade item that can be added to the agony infusion slot of any infused ascended rings or backpieces to increase your Agony Resistance.

If you want to place agony infusions in a defensive, offensive, or utility infusion slot, you have to use things like Versatile Simple Infusion. The Versatile Basic Infusion you are likely using currently is one of these so-called Omni infusions.

See the Infusion page for more info.


That said, if you want to extract your infusions, which is particularly useful for upgrading the +X Agony infusions to a higher level, you can buy an Infusion Extraction Device. It is sold by Dessa's Crewe, who is only reachable after unlocking Fractal Mastery Level I.