It's understandable to be frustrated when a device stops working, but just a quick reminder that this is a community forum - other users here don't have access to Meta's internal tools, logs, or the ability to repair or replace hardware. We can only help based on the symptoms you provide.
Right now, there aren't any details about what the headset is actually doing (LED behavior, boot logo, charging indicators, recovery mode access, etc.), so it's hard for anyone to confirm whether this is a software issue, a hardware failure, or something else that just happened to occur after an update. Correlation alone doesn't tell us the cause.
If you want the community to help troubleshoot, it would be useful to describe the exact behavior of the headset when you try to power it on or charge it. Otherwise, the only path forward is through Meta Support, since they're the only ones who can investigate warranty options or escalate device‑level failures.