For legitimate owners of God of War on PC (via Steam or the Epic Games Store), the process is automatic:
The primary purpose of this specific update was to refresh the game's licensing information and credit sequences:
The update altered data within the core . Because it only added metadata text and legal strings to the final credit screen sequence, the physical download footprint was miniscule. Players on standard broadband connections completed the download in seconds. 🎮 Did the Update Affect Gameplay or Performance?
Fixed a bug where endgame quest music would loop indefinitely in Midgard during NG+.
This matches the information from a game update notifier, which states:
The cumulative effect of these updates should be a more enjoyable and engaging experience for players. By reducing bugs and improving performance, Santa Monica Studio is ensuring that players can immerse themselves in Kratos's world without the disruptions that bugs and performance issues can cause.
While this patch did not introduce new gameplay features or narrative content, it focused on refining the experience for high-end PC players:
How to verify and follow up