What Is Eridium Used For in Borderlands 4?

For those who played Borderlands 3, Eridium makes a return in Borderlands 4 as a special type of currency.  The only difference is that this time around, Crazy Earl isn’t here to take it off the gamer’s hands in exchange for outfits and storage upgrades. In Borderlands 4, Eridium is now a treasured endgame item that players will want to collect before completing the game. While simply progressing through the campaign, many players will have a stockpile of Eridium stored up, but what is Eridium used for in Borderlands 4?

Moxxi’s Big Encore

A new addition to Borderlands 4 is Moxxi’s Big Encore Machine. It’s not foreign for Borderlands gamers to replay certain boss fights to grind for XP or farm for specific loot drops. This new machine allows players to easily restart boss battles at the cost of cash or Eridium. For players who haven’t finished the story, they can pay for an encore, which replays the selected boss battle as normal. However, for those who have finished the campaign, they can request a Big Encore for Eridium, which boosts the bosses’ drop rates. A much easier process of farming for loot compared to dropping in and out of sessions.

Specialization Reset

Upon completing the main story, players can not only respec their Vault Hunters’ skills for cash, but they can now respec their specializations. When resetting specializations, it costs 5,000 Eridium but can be done as many times as the player chooses. These respec stations can be found within these locations.

Faction Towns:

• Carcadia
• The Launchpad
• Belton’s Bore

Safe Houses:

• The Lockaway

Read More: All Borderlands 4 Character Skill Tree

Firmware Transfer

Yet another new mechanic in Borderlands 4 is Firmware. This mechanic serves as a system where players can randomly roll different buffs for their equipment. If lucky enough, players can roll for a 3-piece set bonus providing stronger upgrades, something essential while in the endgame. At the cost of eridium, the set effect of one item can be transferred to another. This is called Firmware Transferring. So players can budget their eridium, here are all of the Firmware that can be obtained.

Action Fist Melee

1. Melee Damage is increased by 15%
2. Action Skill Damage is increased by 10%
3. On Melee kill, Action Skill Damage is increased by 25% for 8s

Airstrike

1. Splash Radius is increased by 20%
2. Splash Damage is increased by 20%
3. On kill, drop a missile strike on nearby enemies

Atlas EX

1. Gun Mode Switch Speed is increased by 20%
2. Gun Damage is increased by 10% while an Atlas Target Lock is active
3. When killing an Atlas Target Locked enemy, automatically Target Lock another nearby enemy

Atlas Infinum

1. Gunfire rate is increased by 5% while an Atlas Target Lock is active
2. Guns with Atlas-licensed parts gain 10% Damage
3. Atlas Target Locks are infinite, unless you swap Guns

Baker

1. Shield Capacity is increased by 10%
2. Repkit Cooldown Duration is reduced by 15%
3. Maximum Health is increased by 25%

Bullets To Spare

1. Fire Rate is increased by 5%
2. Gun Magazine Size is increased by 20%
3. Gunfire rate is increased by 50% of the Gun Magazine Size

Daed-dy O’

1. Gun Mode Switch Speed is increased by 25%
2. Gun Magazine Size is increased by 15%
3. On Mode Switch, grants 20% Damage and 20% Fire Rate for 5s

Deadeye

1. Gun Accuracy is increased by 30%
2. Gun Critical Hit Damage is increased by 25%
3. Every Critical Hit grants 15% Critical Damage per Stack (5 max stacks) for 10s

Gadget Ahoy

1. Ordnance Cooldown Duration is reduced by 15%
2. Ordnance Damage is increased by 20%
3. Ordnance Kills grant 20% Damage for 15s

Get Throwin

1. Ordnance Damage is increased by 10%
2. Splash Radius is increased by 20%
3. Grenades and Tediore Thrown Guns have a 50% chance to spawn homing Missiles that home in on nearby enemies.

God Killer

1. Damage dealt to Badass enemies is increased by 10%
2. Damage taken from Badass enemies is reduced by 10%
3. On killing a Badass Enemy, Damage Dealt is increased by 20% for 60s

GOOJFC

1. Action Skill Cooldown Rate is increased by 10%
2. Action Skill Damage is increased by 15%
3. Action Skill Cooldown Rate is increased by an additional 20%

Heating Up

1. Gun Reload Speed is increased by 20%
2. The amount of Overheated shots before breaking is increased by 50% with the CoV-Licensed Gun Part.
3. Gun Damage is increased by 25% while overheating with CoV-Licensed Gun Parts.

High Caliber

1. Projectile Speed is increased by 25%
2. Gun Damage is increased by 10%
3. Bullets Pierce Enemies

Jacked

1. Zoom In Speed is increased by 20%
2. Hyperion Gun Shield Capacity is increased by 25%
3. Hyperion Gun Shields have a 30% chance to Ricochet Projectiles back to the enemy

Lifeblood

1. Repkit Healing is increased by 10%
2. Lifesteal is increased by 5%
3. On kill, regenerate 10% of Maximum Health

Oscar Mike

1. Gun Reload Speed is increased by 10%
2. Gun Damage is increased by up to 20% based on the emptiness of your Gun’s Magazine.
3. After Reloading, the gun’s Fire Rate is increased by 30% for 4s

Reel Big Fist

1. Melee Damage is increased by 15%
2. Melee Damage is increased by an additional 25%
3. Melee Kills trigger a Nova explosion for 200% Melee Damage

Risky Boots

1. When Health is less than 35%, Damage Taken is reduced by 30%
2. When Health is less than 35%, Movement Speed is increased by 35%
3. When Health is less than 35%, Damage Dealt is increased by 100% and Lifesteal is increased by 5%

Rubberband Man

1. Damage Reduction is increased by 5%
2. Lifesteal is increased by 5%
3. Bonuses granted by this Firmware are doubled

Trickshot Gun

1. Reload Speed is increased by 5%
2. Gun Critical Hit Damage is increased by 10%
3. Critical Hits have a 50% chance to refill 1 Ammo to the currently equipped Gun’s Magazine

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