Borderlands 4’s December 18th update is not as major as the previous one that we got on December 11, which added the game’s first invincible boss, Bloomreaper, new Legendaries, Firmware, UVHM level, etc, along with balance changes, performance and stability improvements and such things, but it is better than the minor updates that just reset the weekly activities.
Today’s update introduces Season’s Lootings, increasing drop rates for a certain time, UVHM reward fix, and a few other things, along with the usual weekly resets to Maurice’s Vending Machine’s location, the Big Encore boss, and the weekly Wildcard Mission.
So without any further ado, here’s a look at the official patch notes for the December 18th update.
Patch Details
- Release date: December 18, 2025
- Platforms: PC, PS5, PS5 Pro, Xbox Series X | S
- Patch size: Server side
Borderlands 4 December 18th update official patch notes

Change Notes
- Addressed an exploit where UVHM rewards could be redeemed in non-UVHM Bloomreaper fights
- Season’s Lootings (Dec 18 – Jan 8): Legendary drop rates across Kairos, with the exception of Big Encore Bosses and Bloomreaper the Invincible, have up to 5x increased rates compared to the usual rates!
Weekly Activities: Dec 18 – Dec 25

Weekly Big Encore Bosses (Triple Threat):
- Primordial Guardian Inceptus
- Primordial Guardian Origo
- Primordial Guardian Radix
Weekly Wildcard Mission:
Mission: Rush the Gate (Healthy, Wealthy, Experienced)
Legendary Gear Reward: Aegon’s Dream Vladof Assault Rifle
Maurice’s Black Market Vending Machine
Weekly Activities: Dec 25 – Jan 8
On December 25, the Weekly Wildcard Mission and the location of Maurice’s Black Market Vending Machine will change.
Weekly Big Encore Bosses (Triple Threat):
- Primordial Guardian Inceptus
- Primordial Guardian Origo
- Primordial Guardian Radix
Weekly Wildcard Mission:

Mission: The Timekeeper’s Order (Armored, Bougie, Chain Master)
Legendary Gear Reward: Plasma Coil Maliwan SMG
Maurice’s Location

Visual Hint!
