To update your drivers for Shader Model 3.0 support, you should visit the official website of your graphics hardware manufacturer. Shader Model 3.0 is a hardware-bound feature of DirectX 9; while drivers can ensure compatibility, a physical GPU that supports it is required. Driver Update Links
NVIDIA's Shader Model 3.0, Best Practices provides a deep dive into GPU/CPU bounds and hardware features like instancing and shadow maps. shader model 3 skachat draiver
Shader model 3 (HLSL reference) - Win32 apps - Microsoft Learn To update your drivers for Shader Model 3