HT201475: How to get macOS Sierra
Learn about How to get macOS Sierra
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Helpful answers
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Sep 20, 2016 8:52 PM in response to Eau Rougeby talbotini,Pretty blatant forced obsolescence. Bad form Apple. I've been defending them all week on iPhone 7 and AirBuds and now this... I am severely disappointed right now and loosing faith.
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Sep 21, 2016 12:51 AM in response to talbotiniby lllaass,I updated my 2009 MP to Sierra yesterday. First you have to update the firmware to that of a 5.1 MP.
Use these instructions for updating firmware. You need to dowload the installer
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Sep 21, 2016 5:53 AM in response to lllaassby talbotini,I could be wrong but I don't think that firmware update method works on 2008 models.
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Sep 21, 2016 6:42 AM in response to talbotiniby lllaass,You are right. It only works on the 2009 MP.
There were major hardware changes between the 2006-2008 and the 2009-2012 MPs