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SEPTEMBER PATCH NOTES
Patch Date and Time - September 23rd, 2025 @ 10AM - 1PM PACIFIC
Version Number: v1.4.312.0
Size: TBD
Please note that due to compression differences Steam patch size may be larger than the standalone client patch size.
Patch Files (Direct Download) - TBD
Greetings MechWarriors!
This month’s update includes the release of the Shadow Hawk IIC pack, 'mech adjustments, quirk adjustments, and more!
As always, a 2 week in-game Patch Science Sale will go live shortly after the patch and include all applicable items for testing.
'Mechs in-game and new 'mechs releasing are subject to future balance changes and tuning, so get out there and do the science so we can hear your feedback!
Shadow Hawk IIC
It’s here! The Shadow Hawk IIC launches in the September patch. You can view the package purchase page HERE!
Players who purchased the Clan Galaxies skin pack will also receive the Galaxies skins on the Shadow Hawk IIC
SHD-IIC and SCH-IIC(S)
SHD-IIC-2
SHD-IIC-4
SHD-IIC-5
SHD-IIC-6
SHD-IIC-A
SHD-IIC-B
SHD-IIC-DT
*Known Issue - SHADOWHAWK IIC Cockpit Animations are not displaying properly this will be addressed in a future patch
Store Adjustments:
Legends to Heroes
- Sigma, Starshot, and Naomi legends released for MC
Weapon Changes:
- Reduced Railgun offensive crit chance to weapon baseline (originally it was given the increased offensive crit chance of Gauss. This was unintentional)
- Increased Railgun fire volume
Map Changes:
- Reduced tree count on Emerald Vale
Equipment Changes:
- Increased Clan Double Heatsink component health to 7(from 4)
Bug Fixes:
- The following special mechs now have their special equipment show tooltips explaining their function: BANE-L, BKL-M(TSP), CPLT-FB/FB(LGD), CHP-AP/AP(LGD), all Fire Moths, GAR-M and P omnipods, SMN-II-E omnipods, SMN-II-T, PXH-S/S(LGD), and WHK-K/K(LGD)
- LRMs, ATMs, and Thunderbolts when fired in direct fire mode will now benefit from spread quirks and skills
Mech Mobility Changes:
- Increased Red Reaper Torso Yaw Speed to 126 Deg/S (from 108)
- Increased Red Reaper Torso Pitch Speed to 90 Deg/S (from 78.25)
Quirk Changes:
Jenner
- JR7-F
- Removed -5% Laser Heat
- Added 15% Medium Laser Family Heat
- Increased Heat to -10% (from -5%)
- JR7-D
- Removed 10% Missile Velocity
- Increased Heat to -10% (from -5%)
- Increased Missile Cooldown to -15% (from -7.5%)
Assassin
- ASN-23
- Removed -10% Energy Cooldown
- Removed -10% Missile Cooldown
- Added -10% Cooldown
- Added -15% Spread
- Added 20% Missile Velocity
Blackjack
- BJ-1DC
- Added 50% UAC Ammo
Hunchback
- HBK-4J
- Removed -10% LRM Spread
- Added -20% Missile Spread
- Increased Missile Heat to -20% (from -5%)
Catapult
- CPLT-C2
- Removed -10% LBx Cooldown
- Removed -5% LBx Spread
- Removed 20% LBx Velocity
- Removed 10% Missile Velocity
- Removed -5% Missile Heat
- Added 20% Velocity
- Added -10% Cooldown
- Added -10% Spread
- Increased Range to 15% (from 10%)
- CPLT-C4
- Removed -20% Energy Cooldown
- Removed -20% Missile Cooldown
- Removed -10% Missile Heat
- Added -20% Cooldown
- Added -10% Heat
- Increased Range to 20% (from 10%)
- CPLT-BB
- Removed 10% MRM Velocity
- Increased Missile Velocity to 20% (from 10%)
- Summoner
- All variants
- Added -20% Crit Chance Receiving to Center Torso
Black Knight
- BL-6-KNT
- Removed -5% Laser Heat
- Removed 10% Medium Laser Range
- Removed 5% Pulse Laser Range
- Added 10% Range
- Added -15% Medium Laser Family Heat
- Added -15% Laser Duration
- BL-6B-KNT
- Added 15% Pulse Laser Range
- BL-7-KNT
- Removed -5% Energy Cooldown
- Removed +2 LPPC HSL
- Removed 10% PPC velocity
- Added 30% Velocity
- Added 10% Range
- BL-7-KNT-L
- Removed -5% Laser Duration
- Removed -10% STD Laser Duration
- Added 25% Medium Laser Family Range
- Added IS STD LL HSL +2
- BL-P-KNT
- Removed -10% STD Laser Heat
- Removed -10% Missile Heat
- Added 30% STD Autocannon Range
- Added -10% Heat
- Increased Missile Cooldown to -40% (from -30%)
- BL-X-KNT-2
- Removed all Armor Quirks
- Added +12 Full Body Armor
- Added +138 Armor to RA
- Added +15 Armor to CT
- Added 20% Missile velocity
- Added -15% Missile heat
Thanatos
- TNS-4P
- Added -60% Missile Spread
- Added 100% Missile Velocity
Longbow
- LGB-10K
- Added 15% UAC20 Range
Bullshark
- BSK-WG
- Added -10% Heat
Clan Bullshark
- BSK-VK
- Removed -10% Dissipation
- Reduced CT Armor to +10 (from +15)
- Reduced LT and RT Armor to +15 (from +20)
- Reduced LA and RA Armor to +10 (from +15)
Dire Wolf
- DWF-S
- Increased Turn Rate to 45% in So8 (from 10%)
- Increased Torso Yaw Speed to 45% in So8 (from 10%)
- Added 45% Torso Pitch Speed in So8
Patch Files (Direct Download)
To make the patching process easier for players with limited download caps, we'll be providing direct download links for the patch file(s) that comprise this patch. This will allow you to download the patch file(s) elsewhere, for manual injection into the MWO patcher through a Patch Cache folder.
Aside from allowing you to download the patch file(s) elsewhere, on another connection, there are no additional benefits to performing the patch this way; the patching process itself will be the same.
This direct patch download process will only work for players running the standalone client. It does not apply to players running MWO through Steam.
Patch File(s): -TBD
Download the above file(s)
For sake of ease, we recommend creating a dedicated folder for the patch file(s), such as 'MWO Patch Cache'
You do not need to unzip or unpack the patch file(s)
Launch the MWO Portal
Select the three horizontal lines in the top left of the Portal Window
Choose the 'Specify Patch File Cache' option
In the field that appears, paste or enter the location in which you saved the patch file(s) and hit OK
For example, C:\Users\<username>\Documents\MWO Patch Cache
Click the blue Patch button
The launcher will now check the Patch Cache folder you defined. If it locates the required patch files, it will unpack and use those files to apply the patch
Once the patch is complete, launch the game
