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Microsoft released a "Convenience Rollup" in 2016 that contains all updates from SP1 through April 2016. While not a "Service Pack" by name, it functions like one. Do not trust pre-bundled third-party ISOs
Below is a comprehensive guide to understanding why Windows 7 SP3 does not exist, how to safely download the official final version of Windows 7, and how to apply all updates at once. Why "Windows 7 Service Pack 3" Does Not Exist
The short answer is no.