Microsoft never officially released a "Service Pack 2" for Windows 7. What you're likely seeing referred to as SP2 by some users is actually the "Convenience Rollup" update. This was released in 2016 to make it easier for users to install all the important updates released after Service Pack 1 in one go.
To get the Convenience Rollup, you'll first need to install some prerequisites, including the latest Service Stack Update and the April 2015 servicing stack update for Windows 7. After that, you can download the rollup from the Microsoft Update Catalog.
Here are the general steps you could follow:
- Make sure Service Pack 1 is installed on your Windows 7.
- Install the April 2015 servicing stack update (KB3020369).
- Download and install the Convenience Rollup (KB3125574), which you can find in the Microsoft Update Catalog.
Always download updates from official sources like the Microsoft Update Catalog to ensure they're safe and legitimate. Let me know if you need more details on any of these steps!