I have downloaded a program and I am being told to update to OS X 10.12 or later, how do I update?
I Have downloaded a program and when I try to open it, I am told I need to update toOS X 10.12 or higher. How do I do that?
iMac 21.5″, OS X 10.11
Question marked as
macOS Sierra is available for download, click on the link below.
How to upgrade to macOS Sierra - Apple Support
Before upgrading make a full back up of your Mac.
Check that third party apps you use have updates available for the new OS.
Check that your printers/ scanners etc have updated drivers and software available for the new OS.
Connect your mac to your router via cable rather than rely on WiFi.
Do not use your mac while it is downloading
and do not use any other devices that share the same internet connection.
from the link
Go to Section 4 and click on Download macOS Sierra.
This downloads InstallOS.dmg to your Downloads folder.
The next section can only be done on a mac that is capable of running Sierra,
a mac that came preinstalled with an OS later than Sierra will refuse to do the next bit.
When downloaded open to InstallOS.pkg, double-click on
that and an installation window will open, this does not install Sierra
but converts the InstallOS.pkg to the Install macOS Sierra.app which
you will find in your Applications folder, it should be 5.03GBs in size.
(If the installation window asks which disk you want to install to, you must pick
the disk that you are booted to at the time. Not any internal or external disk that
you want to eventually install El Capitan on, that is for later.)
To start the installation of Sierra double click on the Install macOS Sierra.app.
If your mac can upgrade to Sierra it can upgrade to High Sierra.
Use your Safari browser, Firefox will not work.
How to upgrade to macOS High Sierra - Apple Support
Go to Section 4 and click on Get macOS High Sierra
this will redirect you to the App Store High Sierra page,
it should say Get or Download.
This will download the Install macOS High Sierra.app to your downloads folder.
