How To Downgrade from Mac OS X 10.6.7 to 10.6.6

Snow Leopard Install Screen

  1. While OS X is running, insert your OS X Snow Leopard Install DVD.
  2. Double click Install Mac OS X.
  3. Keep the DVD inside your computer while you wait for it to restart.
  4. Wait until the second phase of the installation procedure completes.
  5. You are now downgraded to OS X 10.6.2 (or something less than 10.6.6).
  6. Download and apply the OS X 10.6.6. combo update to bring you back to 10.6.6.

5 Responses to “How To Downgrade from Mac OS X 10.6.7 to 10.6.6”

  1. Kaleb Wyman says:

    I tried to get the OS X 10.6.6 combo update, and received a 503 error β€” awesome! Thanks Apple, I have a deadline tomorrow and the .OTF font meltdown with 10.6.7 is killing me, and with the combo updater not available to downgrade, I’m pretty screwed…

    “Due to a scheduled upgrade of Apple’s support systems, some features of the website are currently unavailable. We apologize for any inconvenience.

    Go to the Apple Support homepage”


  2. silvio says:

    will this procedure risk any loss of data ?

  3. cnofal says:

    I can’t be sure; however, I didn’t lose any personal data.

  4. bosSsob says:

    @ Kaleb Wyman
    Please m8. We all use timemachine to restore our mac`s in just 5 minutes.Or dont you know your mac.Dont blame apple for your mistakes. πŸ˜‰

  5. cnofal says:

    Restoring via TimeMachine is another way to fix the error that Apple created with 10.6.7. However, since Apple’s “Supplemental Font Update” for 10.6.7, this issue has been resolved.

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