MacBook Air introduced in late 2010 or later Your Mac also needs at least 2GB of memory and 8.8GB of available storage space. You can upgrade to macOS Sierra from OS X Lion or later on any of the following Mac models. Added Sierra wallpaper-Fixed installation bugs on non-English OS (Proper) Version 3.0-Added Windows 10 logon screen modification-Improved theme patching reliability in Windows 10-Improved ViFind’s startup reliability-Updated cursors with Mac Os El Capitan Cursor Pack for Windows by arnoldantonio-Updated FinderBar skin. Mac OS X Theme is a product developed by Wincustomize.This site is not directly affiliated with Wincustomize.All trademarks, registered trademarks, product names and company names or logos mentioned herein are the property of their respective owners. MacOS Sierra is the successor of OS X El Capitan, and got its name from the Sierra Nevada ountain range in California. It is the first OS that bears the new 'macOS' name instead of the 'Mac OS X' that we were used to. The latest version of Apple's operating system was released only half a year ago, in September 2016, and is named macOS Sierra. Mac Os Sierra Skin For Rocketdock Windows 7.