when was windows 7 service pack 1 released
Windows 7 Windows 7 Service Pack 1 (SP1) was announced on March 18, 2010. A beta was released on July 12, 2010.[116][117][118] The final version was released to the public on February 22, 2011.[119] At the time of release, it was not made mandatory. It was available via Windows Update, direct download, or by ordering the Windows 7 SP1 DVD.[120] The service pack is on a much smaller scale than those released for previous versions of Windows, particularly Windows Vista.[121]