Downloading a file will not upgrade an old graphics card that lacks the physical architecture to run SM 3.0. It would be like trying to download more horsepower for a car engine—the physical components simply aren't there. How to "Get" It

Shader Model 3.0 is a integrated into your graphics card (GPU) and cannot be downloaded as a standalone software file. If a game or application says you are missing it, it means your physical graphics hardware is too old to support it, or your drivers need updating. 🛠️ How to "Get" Shader Model 3.0