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Level 1

4 points

how to update to high sierra

iMac 27″ 5K, macOS 10.13

Posted on Dec 10, 2020 7:03 PM

Top-ranking reply

Level 10

245,309 points

Posted on Dec 10, 2020 8:41 PM

Try reinstalling this in Safe Mode, but not using Firefox...

Safe Boot, (holding Shift key down at startup).

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