Microsoft released Windows 7 Service Pack 1 (SP1) in last February which includes previously released security, performance, and stability updates as well as new improvements to features and services in Windows 7. The easiest way to update your Windows 7 to SP1 is via Windows auto updates (control panel) or via Standalone SP1 Installer and I’m sure that you may have already done that. For any reason you need to format your system and re install Windows 7, there is no need for you to go through the update process again to get Window 7 SP1 update. Now you can free download official service pack 1 (SP1) integrated Windows 7 from Digital River, who’s Microsoft’s official online distribution partner, Servers.
You can download the required ISO images (bootable) from the below link and burn to DVD by simply right click on it from Windows 7.
Service Pack 1 Integrated Windows 7 ISO Images
Windows 7 -
Home Premium x86 SP1 (bootable) – http://msft.digitalrivercontent.net/win/X17-24208.iso
Home Premium x64 SP1 (bootable) – http://msft.digitalrivercontent.net/win/X17-24209.iso
Professional x86 SP1 (bootable) – http://msft.digitalrivercontent.net/win/X17-24280.iso
Professional x64 SP1 (bootable) – http://msft.digitalrivercontent.net/win/X17-24281.iso
Ultimate x86 SP1 (bootable) – http://msft.digitalrivercontent.net/win/X17-24394.iso
Ultimate X64 SP1 (bootable) – http://msft.digitalrivercontent.net/win/X17-24395.iso
Note : Licence key is required to activate your copy after one month’s trial period. [Via]