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Level 1

8 points

I'm trying to update my mid-2011 iMac.

I'm getting this message from the Apple Store. "This copy of the Install macOS High Sierra application is damaged, and can‘t be used to install macOS." Any alternatives?

iMac 21.5″, OS X 10.10

Posted on Aug 18, 2021 1:58 PM

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Niel

Level 10

727,775 points

Posted on Aug 18, 2021 2:01 PM

Choose Applications from the Finder's Go menu, throw the existing installer away, and download another copy.

(203392)

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Best reply

Niel

Level 10

727,775 points

Aug 18, 2021 2:01 PM in response to moregan100

Choose Applications from the Finder's Go menu, throw the existing installer away, and download another copy.

(203392)

Aug 24, 2021 7:17 PM in response to moregan100

Change the DATE in TERMINAL from a boot USB or from CMD-OPT-R recovery mode. Look up High Sierra's Date of manufacture/release and us that. Format date as: MMDDYYYYMmSs

I'm trying to update my mid-2011 iMac.

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