In the archives of PlayStation 4 modding history, specific strings of code become legendary. For fans of Gravity Rush 2—the cult-classic open-world action-adventure game developed by Project Siren and published by Sony Interactive Entertainment—one particular keyword has circulated in underground forums and backup manager groups: "Gravity Rush 2 CUSA04943 PS4 4.05 PKG Auctor Hot."
To the average player, this looks like a garbled line of error codes. But to those familiar with low-firmware PS4 jailbreaking, it represents a specific moment in time—a snapshot of how game preservation, modding, and digital distribution intersected during the era of firmware 4.05.
This article breaks down every component of that keyword: what CUSA04943 means, why firmware 4.05 is crucial, the role of PKG files, and the significance of the term "Auctor Hot." gravity rush 2 cusa04943 ps4 4 05 pkg auctor hot
The most critical part of the keyword is "PS4 4.05."
For years, Sony has released firmware updates to patch security exploits. The PS4 scene saw its first major public jailbreak for firmware 4.05 (released in late 2016). This firmware became a "golden build" because security researchers (notably SpecterDev and the Fail0verflow team) demonstrated a WebKit exploit combined with a kernel exploit that allowed for homebrew and backup loading. In the archives of PlayStation 4 modding history,
Why 4.05 specifically?
If you see a PKG labeled for "4.05," it means the dump was created and tested on a PS4 running that exact firmware. Games released after 4.05 often required backported patches, but Gravity Rush 2 originally launched while 4.05 was still current, making it one of the native titles for that firmware. If you see a PKG labeled for "4
Every PlayStation 4 game disc and digital download carries a unique "CUSA" ID. This alphanumeric string identifies the specific regional release and version of a title.
CUSA04943 refers to the North American (USA) region release of Gravity Rush 2. Different regions have different CUSA codes:
When modders or backup launchers reference CUSA04943, they are specifying the exact game data structure required for compatibility with cheats, patches, or DLC unlockers. This ID is embedded in the game’s param.sfo file and must match what the PS4’s kernel expects.