Apple today seeded fourth betas of iOS 10.3, macOS Sierra 10.12.4 and watchOS 3.2 to members of the Apple Developer Program. IOS 10.3 beta 4 (build number 14E5260b), macOS Sierra 10.12.4 beta 4 (build number 16E175b) and watchOS 3.2 are now all available as over-the-air downloads through the Software Update mechanism on devices with an appropriate configuration profile. MacOS Sierra (version 10.12) is the thirteenth major release of macOS (previously Mac OS X from 2001 to 2012 and OS X from 2012 to 2016), Apple Inc.' S desktop and server operating system for Macintosh.It was the first version of the operating system issued under the June 2016 rebranding as macOS. Sierra is named after the Sierra Nevada mountain range in California and Nevada. Global Nav Open Menu Global Nav Close Menu; Apple; Shopping Bag +.
Check compatibility
You can upgrade to macOS Sierra from OS X Lion or later on any of the following Mac models. Your Mac also needs at least 2GB of memory and 8.8GB of available storage space.
MacBook introduced in late 2009 or later
MacBook Air introduced in late 2010 or later
MacBook Pro introduced in mid 2010 or later
Mac mini introduced in mid 2010 or later
iMac introduced in late 2009 or later
Mac Pro introduced in mid 2010 or later
MacBook Air introduced in late 2010 or later
MacBook Pro introduced in mid 2010 or later
Mac mini introduced in mid 2010 or later
iMac introduced in late 2009 or later
Mac Pro introduced in mid 2010 or later
To download the new OS and install it you’ll need to do the next: Open App Store. Click Updates tab in the top menu. You’ll see Software Update — macOS Sierra. Wait for Mac OS download and installation. Your Mac will restart when it’s done. Now you have Sierra. How do I download OS X 10.12 6?
To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . If your Mac isn't compatible with macOS Sierra, the installer will let you know.
Make a backup
Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.
Get connected
It takes time to download and install macOS, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.
Download macOS Sierra
![10.12 10.12](/uploads/1/3/3/2/133273227/254410496.jpg)
Mozilla firefox 5 for mac free download. For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of the Mac operating system.
If you still need macOS Sierra, use this link: Download macOS Sierra. A file named InstallOS.dmg will download to your Mac.
Install the macOS installer
Double-click the downloaded file to open a window showing its contents. Then double-click the file within, named InstallOS.pkg.
Follow the onscreen instructions, which will guide you through the steps necessary to install.
Begin installation
After installation of the installer is complete, open the Applications folder on your Mac, then double-click the file named Install macOS Sierra.
![Mac Mac](/uploads/1/3/3/2/133273227/780022188.jpg)
Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.
Allow installation to complete
Mac Os 10.12 Sierra Iso
Please allow installation to complete without putting your Mac to sleep or closing its lid. Company of heroes 2 mac download free. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both macOS and related updates to your Mac firmware.
Download Mac Os Sierra
Learn more
Mac Os 10.5
- If you have hardware or software that isn't compatible with macOS Sierra, you might be able to install the previous version, OS X El Capitan.
- macOS Sierra won't install on top of a later version of macOS, but you can erase your disk first or install on another disk.
- You can use macOS Recovery to reinstall macOS.