Marathon Update 1.1.5.5 Raises Firestorm Key Rewards to 3

Players who have not claimed the previously mailed 150 UESC Manifests should check their mailbox, while a repeat-reward issue in Cryo Archive has been fixed.

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Close-up view of the Firestorm weapon with UESC markings from Marathon's Ordnance Heist

Marathon Update 1.1.5.5 gives Ordnance Heist a better reward loop by fixing UESC Manifest sharing and raising Firestorm Locker Key rewards to up to 3 keys per completed key template. Bungie’s official update notes also cover Firestorm Arms Locker loot and a repeat-reward issue in Cryo Archive.

After a successful exfil, UESC Manifests should now be shared among crew members. Players who have not claimed the 150 Manifests sent out during the affected period should check their mailbox. Key templates now grant up to 3 Firestorm Locker Keys instead of 1.

Bungie noted that those two Ordnance Heist changes originally went live on August 21. They follow the event and loot adjustments introduced in Marathon Update 1.1.5.4, which also addressed problems affecting player inventories and rewards.

Firestorm Arms Lockers now provide more rolls for implants and cores, with a higher chance for those items to appear at Prestige rarity. To make room for the extra rolls, the number of weapon chips and consumables has been reduced slightly.

Outside Ordnance Heist, opening the Hidden Cache in Cryo Archive no longer grants XP and MIDA reputation continuously. Bungie also confirmed that this action and any others that were temporarily disabled have been re-enabled.

Marathon Update 1.1.5.5 Patch Notes

The patch notes focus on Ordnance Heist progression, Firestorm Locker rewards, and the Cryo Archive Hidden Cache. The official changes are reproduced below in their original order.

Ordnance Heist

Fixed an issue where UESC Manifests were not shared among crew upon exfil.
- If you have not already claimed it, players should check their mailbox for the 150 Manifests we had previously sent out while this issue was active.
Increased the number of Firestorm Locker Keys granted upon completion of a key template, up to 3 from 1.
Updated Firestorm Arms Locker loot.
- Increased the number of rolls for implants and cores, with a higher chance of these items dropping at Prestige rarity.
- To make room for these increases, slightly reduced weapon chip and consumable item count.
Dev Note: The above two changes originally went live on Friday, 8/21.

General

Fixed an issue where opening the Hidden Cache in Cryo Archive would continuously grant XP and MIDA reputation.
- This action, as well as any others that were temporarily disabled, have now been re-enabled.

Have these Ordnance Heist changes improved your runs, or did your crew run into another issue? Share your thoughts in the comments, and follow us on X, Bluesky, YouTube, Instagram, Steam, and Telegram.

A PvP-focused extraction shooter set on the mysterious planet of Tau Ceti IV, Marathon will see players inhabit the bodies of Runners, cybernetic mercenaries who have been designed to survive the planet’s harsh environments and explore the lost colony that once inhabited Tau Ceti’s surface. Players will engage solo or in crews of three, searching for mysterious alien artifacts, as well as for valuable loot and new weapons and gear that they can add to their collection.