Unlike traditional installations where the disc contains the full game, BO4 utilized a "Data grouping" strategy. The initial install required a substantial day-one patch to access the full suite of modes (Multiplayer, Zombies, Blackout). The PKG structure allows the system to mount specific "sprx" (module) files and "pak" (asset) files dynamically.
Here’s the catch: Black Ops 4 relies heavily on online servers for zombies progression, Blackout, and multiplayer. On a modded PS4, you can’t access official online play without risking a ban.
So the community focuses on offline-supported updates. The most widely backported and stable version is: call of duty black ops 4 ps4 pkg updated
Update v1.26 (approx 15–20 GB)
Why v1.26?
Later updates (v1.27–1.31) exist, but they often introduce online requirement prompts or break offline bot modes unless you have a backported, patched eboot.
First, a quick refresher for newcomers:
Without the right update, you’re stuck with a glorified coaster. With it, you unlock the “final” offline-ready state of the game.