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Archive for October 28, 2019

Downloading macOS installers with updated signing certificates on macOS Catalina

October 28, 2019 27 comments

As a follow-up to last week’s expiration of the certificate used to sign previously-released macOS installers, Apple has released re-signed macOS installers with the new certificate which is good until April 2029.

For those who archive older macOS installers, this means that the macOS installers in question will need to be re-downloaded. macOS Catalina has added some new functionality to the softwareupdate tool which can assist with this. For more details, please see below the jump.

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Categories: Mac administration, macOS
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