The update brings with it the usual reliability and security enhancements users have come to expect and is the first major tweak to the OS since its release back in 2009.
"Windows 7 Service Pack 1 (SP1) is an important update that includes previously released security, performance, and stability updates for Windows 7," Microsoft said.
"SP1 also includes new improvements to features and services in Windows 7, such as improved reliability when connecting to HDMI audio devices, printing using the XPS Viewer, and restoring previous folders in Windows Explorer after restarting."
The service pack was released to manufacturers earlier this month but is now available as a download for all users.
