How to install macOSUpd10.12.6

OS X EI Captain is installed after erasing Mac mini. I downloaded macOSUpd10.12.6 but it docent install, kindly suggest

Mac mini, OS X 10.11

Posted on Apr 28, 2022 2:15 AM

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Question marked as Top-ranking reply

Posted on Apr 28, 2022 4:24 AM

The user is attempting to Install an UpDate to an Already Existing and Installed version of Sierra.


This macOSUpd10.12.6 is NOT a FULL VERSION of Sierra and will never upGrade El Capitan to Sierra


The Only way to get the Full Version of Sierra is as per below >>


The Age of this computer will Govern what newer version of macOS it will Qualify to install. Use About this Mac from the Apple Icon on Desktop - the required Information will be there.


With the above information in-hand - follow this How to get old versions of macOS and verify what version this computer Qualifies to install.  For Best results use Safari to commence the download as Others may not work.


Safari will open a redirect and open the Apple Store where the download can commence.


macOS Sierra 10.12 hardware requirements


Safari downloads the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [Version Name]. Open that app from your Applications folder to begin installing the operating system.

  • macOS Sierra can upgrade El Capitan, Yosemite, Mavericks, Mountain Lion, or Lion


2 replies
Question marked as Top-ranking reply

Apr 28, 2022 4:24 AM in response to Kulwant Bhabra

The user is attempting to Install an UpDate to an Already Existing and Installed version of Sierra.


This macOSUpd10.12.6 is NOT a FULL VERSION of Sierra and will never upGrade El Capitan to Sierra


The Only way to get the Full Version of Sierra is as per below >>


The Age of this computer will Govern what newer version of macOS it will Qualify to install. Use About this Mac from the Apple Icon on Desktop - the required Information will be there.


With the above information in-hand - follow this How to get old versions of macOS and verify what version this computer Qualifies to install.  For Best results use Safari to commence the download as Others may not work.


Safari will open a redirect and open the Apple Store where the download can commence.


macOS Sierra 10.12 hardware requirements


Safari downloads the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [Version Name]. Open that app from your Applications folder to begin installing the operating system.

  • macOS Sierra can upgrade El Capitan, Yosemite, Mavericks, Mountain Lion, or Lion


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How to install macOSUpd10.12.6

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