Instructions for installing routine macOS updates after an 'unofficial' upgrade installation to update your unsupported Mac to a system allowing installation of security updates and bug fixes. PLEASE DO NOT USE THIS GUIDE TO UPGRADE TO A NEW OS. FOR EXAMPLE SONOMA TO SEQUOIA.

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Before doing anything, please run a routine Time Machine backup to an external drive connected to your computer. If you do not have a backup of your machine, please stop right here and do not proceed any further. You risk losing your data.

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