Update Macos High Sierra 10136 To 1015 - How To

. If your Mac was released between 2009 and 2011, it likely cannot officially run Catalina and will remain at High Sierra. Apple Support Community : Early 2015 or newer MacBook Air / Pro : Mid-2012 or newer : Late 2012 or newer : Late 2012 or newer : Late 2013 or newer Apple Support Phase 2: Crucial Pre-Update Steps

Before any major OS upgrade, use Time Machine to back up your data to an external drive. Updates can fail, and data loss is a real risk. how to update macos high sierra 10136 to 1015

How to Update macOS High Sierra 10.13.6 to macOS Catalina 10.15 how to update macos high sierra 10136 to 1015