I am investigating a website bug that seems to only occur in Safari 8.0.4 (Yosemite 10.10.2), but I am on 8.0.6 (Yosemite 10.10.3) already.

Is there any way to downgrade Safari to the patchlevel I require that does not include restoring an old backup from Time Machine or reinstalling the OS?

1 Answer 1


For testing environments I recommend using Parallels or VMware. You could do an install of Yosemite and then only install the updates needed.

I usually create multiple virtual machines by creating a base VM, then copying it, doing a round of updates, then copy that one, then doing another round on the next copy, then repeat that process until I have all of the software versions I am looking for.

Keep in mind that some of the software you may want to use will require a separate license for each virtual machine.

  • So in short; there is no way to downgrade?
    – Martin
    Jun 24, 2015 at 14:39
  • I do not believe so, sorry Jun 24, 2015 at 15:07
  • Might not work, but shouldn't be too difficult to restore only Safari.app from an old backup, and then just restore that app afterward from the newer backup. If it doesn't, maybe the app and ~/Library
    – WGroleau
    Apr 12, 2018 at 21:53

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