The Legendary Aether Tool is an upgrade item in Modern Warfare 3’s Zombies mode that players can use to turn any weapon into a legendary rarity one, increasing the different stats of the weapon and scaling it to ensure you deal decent damage to the enemies found inside the higher tier zones.

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So, if you are looking for details on getting the Legendary Aether Tool and its schematics in MW3 Zombies, you have come to the right place.

In this guide, we share a variety of methods you can use to farm Legendary Aether Tools and the definite way of obtaining the schematics. 

Where to find Legendary Aether Tool schematics in MW3 Zombies

How to get Legendary aether tool - large aether cache
Screenshot by Hritwik Raj / ONE Esports

In MW3 Zombies, you can find the Legendary Aether Tools inside Toolboxes, Aether Caches, and another lootable box inside the Tier 3 zone, Old Town.

How to get Legendary aether tool - aether cache
Screenshot by Hritwik Raj / ONE Esports

Some players have also reported finding a Legendary Aether Tool while looting in the Tier 2 zone.

However, during our runs, we weren’t lucky enough, as, at most, we got the Rare Aether Tool in the Tier 2 zone, whereas, while looting the Tier 3 zone, we got the Legendary Aether Tools more consistently.

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That being said, taking out the two Harvester Orbs that you can find in the northeast and south parts of the Old Town also drops Legendary Aether Tools. 

Alternatively, you can complete Contracts in the Tier 3 zone, such as Deliver Cargo, Raid Weapon Stash, and Spore Control, to get a Legendary Aether Tool.

How to get Legendary aether tool - contract rewards
Screenshot by Hritwik Raj / ONE Esports

Meanwhile, if you complete these Contracts in Tier 1 or Tier 2 zones, you will be mostly getting the Uncommon to Rare Aether Tool with the occasional Legendary Aether Tool drop for Tier 2 zone activities.

Sometimes, high-level enemies like the Mega Abomination also drop a Legendary Aether Tool, so while working your way through Contracts, make sure to take out Mega Abominations. 

Remember, the Legendary Aether Tool spawn depends on RNG, so you may have to keep repeating the steps until you find one. 

How to get Legendary Aether Tool Schematics in MW3 Zombies

How to get Legendary aether tool - greylorm boss
Screenshot by Hritwik Raj / ONE Esports

To get the Legendary Aether Tool Schematics, you must summon and defeat the Greylorm boss inside the Aether Storm in the Tier 3 zone. Once you defeat the boss, a Reward Rift will open up. 

You can interact with it to get any of the following items along with the usual loot:

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  • Legendary Aether Tool Schematic
  • Scorcher Schematic
  • Flawless Aetherium Crystal Schematic

The best way to farm the Aether Tools and other such things in MW3 Zombies is by getting the Death Perception power up, as it outlines all the nearby enemies and lootboxes, making the search process a little easier. 

Summoning the Greylorm boss in MW3 Zombies

How to get Legendary aether tool - calibration usb sticks
Screenshot by Hritwik Raj / ONE Esports

To summon the Greylorm boss, you need four Calibration Data USB sticks which you can find around the map. The location of these USB sticks changes every match, but there is a way to get their exact location while playing.

How to defeat the Greylorm MW3 Zombies boss solo

Head to the Orlov Military Base located in the northeast part of the Urzikstan. Once there, head inside the building marked in the above screenshot.

How to get Legendary aether tool - disk location
Screenshot by Hritwik Raj / ONE Esports

On the second floor, you will find a big map surrounded by four small maps on the wall. These four maps share the current location of the Calibration Data USB sticks that you can find in that game session. 

Compare the map and add markers at the location of the Calibration Data USB sticks. Head to the respective areas, and once you collect four of them, go inside the Aether Storm and insert them inside the Refractor terminals.

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Doing so will spawn the Greylorm boss, whom you can defeat for a chance to get the Legendary Aether Tool Schematics. You must keep farming the boss if you don’t get it in the first run. Lastly, ensure you successfully exfil out.

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