It included minor gameplay and graphical fixes to ensure a smoother experience on base PS4 consoles.
A Detective Game Like No Other - L.A. Noire A0103V0100 CUSA09172 PS4 Review
From official patch notes for L.A. Noire v1.03 on PS4:
: Improved technical and graphical enhancements for a more stable experience on both base PS4 and PS4 Pro (supporting 4K on Pro). DLC Integration
: Includes the complete original game plus all DLC cases (e.g., "The Nicholson Electroplating" and "Reefer Madness").
: Ensure your PS4 is running a compatible firmware (e.g., 9.00 with GoldHEN) and the "bin Loader" server is enabled in your settings. : Use a tool like the Direct Package Installer Remote PKG Installer