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Unable to upgrade from Sierra 10.12.6

I have an iMAC 2011. I believe I cannot upgrade to the latest OS version but with my current status I cannot use certain software I wish to. I believe my iMAC can be upgraded to High Sierra but when I use the links in other threads (Version 10.13.6) it says the version is damaged OR that I have to upgrade to 10.13.1 to upgrade further. However, I have yet to find a link that works. Any assistance would be appreciated. Thank you.

iMac 27″, macOS 10.12

Posted on Jan 2, 2021 3:35 AM

Reply
Question marked as Top-ranking reply

Posted on Jan 2, 2021 3:44 AM

You need to download the full installer app.

Open your Safari browser and click on this link,

How to get old versions of macOS – Apple Support

Go to Download OS and click on macOS High Sierra,

this will redirect you to the App Store High Sierra page

it should say Get or Download. This will download Install macOS High Sierra to your Applications folder

it should be 5.24GBs in size.

This will install the last/ latest version of High Sierra 10.13.6

this is all you need.

If the App Store says ‘Open’ then it is detecting a previous download of the install app

go to the Applications folder locate Install macOS High Sierra.app.

Move it to the Trash, empty the Trash.

Restart, click on the link again, the App Store should say ‘Get' or 'Download'.

3 replies
Question marked as Top-ranking reply

Jan 2, 2021 3:44 AM in response to devang101

You need to download the full installer app.

Open your Safari browser and click on this link,

How to get old versions of macOS – Apple Support

Go to Download OS and click on macOS High Sierra,

this will redirect you to the App Store High Sierra page

it should say Get or Download. This will download Install macOS High Sierra to your Applications folder

it should be 5.24GBs in size.

This will install the last/ latest version of High Sierra 10.13.6

this is all you need.

If the App Store says ‘Open’ then it is detecting a previous download of the install app

go to the Applications folder locate Install macOS High Sierra.app.

Move it to the Trash, empty the Trash.

Restart, click on the link again, the App Store should say ‘Get' or 'Download'.

Unable to upgrade from Sierra 10.12.6

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