Windows 7 Service Pack 1 (SP1) is available to the public a couple days ago. You can either update your Windows 7 through direct download or you can update through Windows Update.
To update via Windows Update you can easily type in “Windows Update” in the search box in the start menu and hit enter. In many cases you don’t have to do that because Windows Update will check on regular basis if there is new update that needs to be installed on your Windows. I’ve to do that because I turn off the Windows Update.
Click “Check for updates” on the left sidebar and it will check for any updates. Windows 7 SP1 might not come up if there are a lot of small updates that you haven’t installed. If that’s the case, you need to make sure to install them first. After installing them, restart your PC and check Windows Update again for Windows 7 SP1 and this time around it should come up in the list.
Select Windows 7 SP1 and any other updates and get them installed.
The update is around 500 MB++ so it’s gonna take a while before it’s done. That’s it!