Today Microsoft released the first significant upgrade of the operating system, Windows 7, Service Pack 1 (SP1), which became available for download worldwide. System upgrade should happen automatically. The volume of the package is 1.9 GB.

Update includes enhanced security, performance and stability of the operating system. Were also corrected an error connecting HDMI-compatible audio, print settings of the program XPS Viewer, as well as restoration of folders in Windows Explorer after a reboot.

The best way to get a system upgrade – is activated in the control panel, automatic updates. Complete upgrade of Windows 7 takes about 30 minutes.

Source: Slashgear.com