If you are searching for the exact phrase you have likely hit a wall of confusion. Here is the critical truth Microsoft does not want you to stress over: Microsoft never officially released a "Service Pack 2" (SP2) for Windows 7.
Use (or older) or WinSetupFromUSB to flash your ISO. Windows 7 Iso File Download 64 Bit Sp2
If you install base SP1 and run Windows Update today, it will take 8+ hours and may fail with "Searching for updates..." forever. The Convenience Rollup distills 5 years of patches into a single 476 MB download. If you are searching for the exact phrase
This gives you a — far better than any fake “SP2” ISO. Windows 7 Iso File Download 64 Bit Sp2