Patch timing matters in PoE 2, especially when a boss gate like Immured Fury can leave you staring at an empty map for no good reason. The 0.5.4b fix is pretty straightforward: once you have cleared 3 Corruption Nexuses, the boss can spawn again, so a missed kill no longer bricks your progress. That is the part most players actually care about, not the lore, but getting the run unstuck. If you are short on Path of Exile 2 Currency, this kind of bug fix also saves time because you do not have to waste extra runs guessing whether the encounter is working at all.

What the fix changes in practice

Before this patch, the annoying part was not the fight itself. It was the uncertainty. Some players were clearing content and still not seeing Immured Fury, or they were missing the expected progression after the encounter. From what I've seen, that is the kind of problem that makes people question whether they did something wrong, when the game was really the issue.

Now the rule is cleaner. Complete 3 Corruption Nexuses, and Immured Fury can appear. If you fail to kill it the first time, you are not locked out. Just keep progressing and it should come back into the pool. That is a big quality-of-life fix for anyone running endgame content with limited time.

How to avoid wasting extra runs

Keep track of your Corruption Nexus progress so you know when the spawn window should open.
Do not assume the boss is broken the moment it fails to appear once, because the fix still depends on you continuing the right progression path.
If the encounter appears but you miss the kill, stay calm and push more Nexuses instead of resetting your whole plan.
Use the missing spawn as a checkpoint for your route, since it is easier to notice progress issues early than after several wasted maps.

What players were confused about before

The community noise around Immured Fury was messy because different players were describing different triggers, and the wording around the objective did not help. Some people thought the boss was tied to a specific rare kill or some extra hidden step. That kind of unclear routing is rough in PoE 2, because players want to know whether they should keep pushing or just start over.

The important part is that the confirmed fix removed the lockout feeling. You do not need to treat the first miss as permanent failure. In practice, that means smoother progression, fewer dead runs, and less time spent second-guessing your map path. For a lot of players, that is more valuable than any flashy reward change.

Why the reward talk should stay separate

People have also been asking about Fracture Orb drops and whether Immured Fury guarantees anything specific. That part is still murky based on the info we have. One kill not dropping the item does not prove much by itself, and a second kill doing so does not make it a guaranteed pattern. If you care about Mirror-tier farming later, buy POE 2 Mirror of Kalandra is the kind of thing players compare only after the spawn issue is solved, because missing the boss entirely is the real bottleneck here.

What matters most after the patch

The main win is simple: Immured Fury now behaves like a recoverable progression step instead of a dead end. That makes endgame mapping feel less random and helps players finish the objective without having to guess whether the system bugged out. At least in my experience, fixes like this do not look huge on paper, but they save a lot of frustration once you are actually in the grind.

Give yourself a few more Nexuses after the third one, keep an eye on the spawn, and do not overreact if the boss does not show immediately. The encounter should now be something you can work back toward instead of something that can silently stall your run.