This single file ( part04 ) cannot function on its own. You must have all other numbered parts (e.g., part01, part02, etc.) in the same folder to successfully extract the game.
To run version 1.6, the game requires at least 70 GB of SSD space and a 64-bit Windows 10 operating system. Cyberpunk.2077.v1.6.GOG.part04.rar
Large games are often split into smaller "parts" (like part04) to make downloading easier and avoid file size limits on certain platforms. This single file ( part04 ) cannot function on its own
This patch added content inspired by the Cyberpunk: Edgerunners anime, including new weapons, a transmog system (Wardrobe), and cross-progression. including new weapons