From Microsoft: Microsoft Windows 7 Service Pack 1 provides ongoing improvements to the Windows Operating System (OS), by including previous updates delivered over Windows Update as well as continuing incremental updates to the Windows 7 and Windows Server 2008 R2 platforms based on customer and partner feedback. This enables organizations to deploy a single set of updates
Key Features of Windows 7 Service Pack 1:
■Ensures your Windows 7 OS is completely up to date
■Provides enhanced security, stability, and performance
■Required for certain programs to function properly
■Completely free to download and install
■Compatible with Windows 7 ONLY (both 32-bit and 64-bit supported)
from here
click 1
or here click to download
regards