Tutorial on how update to High Sierra Os from later model mac pro 2011-2012 with pre-installed Lion X 10.7.5. I have an Apple Desktop that I purchased in mid 2011. The Operating System is Mac OS X Lion 10.7.5. I've started noticing over the past months that many webpages don't display correctly. Certain TV shows won't play individual episodes and automatically defaults to the latest episode. (EG: 7 Plus is hopeless on this computer). Mac OS X Lion (version 10.7) is the eighth major release of macOS, Apple's desktop and server operating system for Macintosh computers. A preview of Mac OS X 10.7 Lion was publicly shown at the 'Back to the Mac' Apple Special Event on October 20, 2010. OS X 10.7 Lion (Barolo) - 20 July 2011; OS X 10.8 Mountain Lion (Zinfandel) - 25 July 2012. (as an update to Snow Leopard) versions of Mac OS X and macOS have been available to download via the. Sep 19, 2012 OS X 10.7.5 can be downloaded through Software Update via the Apple menu. The release notes as shown in Software Update are below: The 10.7.5 update is recommended for all OS X Lion users and includes general operating system fixes that improve the stability, compatibility and security of your Mac.
Welcome to Apple Support Communities.
If I'm understanding correctly, several apps are not working because you need to update your macOS. I will be happy to help you with this. Your current version of macOS can be updated to macOS Sierra.
Take a look at the information below to ensure that you meet all of the other necessary system requirements to upgrade to macOS Sierra, from our article:
Mac Os X Lion 10.7.5
How to get macOS Sierra
Can your Mac use Sierra?
macOS Sierra requires one of the following Mac models and versions of OS X. It also requires at least 2GB of memory and 8.8GB of storage space.
- iMac (Late 2009 or newer)
- MacBook (Late 2009 or newer)
- MacBook Pro (Mid 2010 or newer)
- MacBook Air (Late 2010 or newer)
- Mac mini (Mid 2010 or newer)
- Mac Pro (Mid 2010 or newer)
- OS X El Capitan v10.11
- OS X Yosemite v10.10
- OS X Mavericks v10.9
- OS X Mountain Lion v10.8
- OS X Lion v10.7
To find your model, memory, storage, and version of OS X, choose About This Mac from the Apple menu ().
Get Sierra from the App Store
Before upgrading, it's a good idea to back up your Mac. Then follow these steps:
- Open the App Store app on your Mac.
- Search the App Store for macOS Sierra, or go directly to the macOS Sierra page.
- Click the Download button on the macOS Sierra page. A file named Install macOS Sierra downloads to your Applications folder.
- After download is complete, Install macOS Sierra opens automatically. (You can also open it from the Applications folder, Launchpad, or Spotlight.) Click Continue and follow the onscreen instructions.
Cheers.
Mac Os Lion Iso
Jul 14, 2017 5:20 PM