
If it doesn't work for some reason, you can re-install Safari 6 from Software Update. You will be asked for your admin user's password again. They will be reinstalled if you ever choose to install Safari 6 again. If you're happy with your newly downgraded Safari, you might safely delete those. The last one (amework) and possibly the first one (amework) don't really need to be disabled Safari 5.1.7 will start anyway (at least for me), but since they weren't there before 6.0, I disabled them, too. Use Finder go to again for /System/Library/StagedFrameworks/Safari/ folder. Rename the "amework" folder to "" (You will be asked for your admin password). Paste /System/Library/PrivateFrameworks/ in the goto field. Open a new Finder window and press Command ⌘+ Shift ⇧+ G (Or menu "Go" -> "Go to Folder."). Click on the "Contents of Safari5.1.7LionManual.pkg", Click "Install" on the toolbar, Choose "Yes" or "Replace" when asked (select the box for all continuous questions).

Select "Open Package", choose the 5.1.7 dmg from step 2.


To downgrade Safari 6 on OS X Lion (10.7.4) to Safari 5.1.7:
