You fell into Apples failure in their certificate signing! Here’s a bit more: [https://appleinsider.com/articles/19/10/24/if-youve-got-an-old-macos-install-image-it-will-probably-stop-working-today|If you've got an old macOS install image, it will probably stop working today]. Basically, the signing was shorter than what the market was expecting as we are holding on to our systems longer!
Here’s a set of links to the updated installers. Jump down to Step 4 in all four:
* [https://support.apple.com/en-us/HT208202|How to upgrade to macOS Sierra]
* [https://support.apple.com/en-us/HT208969|How to upgrade to macOS High Sierra]
* [https://support.apple.com/en-us/HT210190|How to upgrade to macOS Mojave]
'''You can also cheat with your current installers!''' All you need to do is alter the systems Date to one that was within the window of when the OS was originally released manually. Don’t forget to reset the time server setting back to auto afterwards. Any of the older installers you’ll need to do it that way.
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As an example: OS-X Lion (10.7.x) was released July 20, 2011, and was replaced by OS-X Mountain Lion (10.8.x) July 25, 2012. So I reset the systems date to January 2012 to be within the releases’s window. The installer is none the wiser! As the certificates date is within the systems date.
You fell into Apples failure in their certificate signing! Here’s a bit more: [https://appleinsider.com/articles/19/10/24/if-youve-got-an-old-macos-install-image-it-will-probably-stop-working-today|If you've got an old macOS install image, it will probably stop working today]. Basically, the signing was shorter than what the market was expecting as we are holding on to our systems longer!
Here’s a set of links to the updated installers. Jump down to Step 4 in all four:
* [https://support.apple.com/en-us/HT208202|How to upgrade to macOS Sierra]
* [https://support.apple.com/en-us/HT208969|How to upgrade to macOS High Sierra]
* [https://support.apple.com/en-us/HT210190|How to upgrade to macOS Mojave]
'''You can also cheat with your current installers!''' All you need to do is alter the systems Date to one that was within the window of when the OS was originally released manually. Don’t forget to reset the time server setting back to auto afterwards. Any of the older installers you’ll need to do it that way.
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As an example OS-X Lion (10.7.x) was released July 20, 2011 and was replaced by Mountain Lion 10.8 July 25, 2012. So I reset the systems date to January 2012 to be within the releases’s window.
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As an example: OS-X Lion (10.7.x) was released July 20, 2011, and was replaced by OS-X Mountain Lion (10.8.x) July 25, 2012. So I reset the systems date to January 2012 to be within the releases’s window. The installer is none the wiser! As the certificates date is within the systems date.
You fell into Apples failure in their certificate signing! Here’s a bit more: [https://appleinsider.com/articles/19/10/24/if-youve-got-an-old-macos-install-image-it-will-probably-stop-working-today|If you've got an old macOS install image, it will probably stop working today]
+
You fell into Apples failure in their certificate signing! Here’s a bit more: [https://appleinsider.com/articles/19/10/24/if-youve-got-an-old-macos-install-image-it-will-probably-stop-working-today|If you've got an old macOS install image, it will probably stop working today]. Basically, the signing was shorter than what the market was expecting as we are holding on to our systems longer!
Here’s a set of links to the updated installers. Jump down to Step 4 in all four:
* [https://support.apple.com/en-us/HT208202|How to upgrade to macOS Sierra]
* [https://support.apple.com/en-us/HT208969|How to upgrade to macOS High Sierra]
* [https://support.apple.com/en-us/HT210190|How to upgrade to macOS Mojave]
'''You can also cheat with your current installers!''' All you need to do is alter the systems Date to one that was within the window of when the OS was originally released manually. Don’t forget to reset the time server setting back to auto afterwards. Any of the older installers you’ll need to do it that way.
As an example OS-X Lion (10.7.x) was released July 20, 2011 and was replaced by Mountain Lion 10.8 July 25, 2012. So I reset the systems date to January 2012 to be within the releases’s window.
You fell into Apples failure in their certificate signing! Here’s a bit more: [https://appleinsider.com/articles/19/10/24/if-youve-got-an-old-macos-install-image-it-will-probably-stop-working-today|If you've got an old macOS install image, it will probably stop working today]
Here’s a set of links to the updated installers. Jump down to Step 4 in all four:
-
[https://support.apple.com/en-us/HT208202|How to upgrade to macOS Sierra]
-
-
[https://support.apple.com/en-us/HT208969|How to upgrade to macOS High Sierra]
-
-
[https://support.apple.com/en-us/HT210190|How to upgrade to macOS Mojave]
-
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* [https://support.apple.com/en-us/HT208202|How to upgrade to macOS Sierra]
+
* [https://support.apple.com/en-us/HT208969|How to upgrade to macOS High Sierra]
+
* [https://support.apple.com/en-us/HT210190|How to upgrade to macOS Mojave]
'''You can also cheat with your current installers!''' All you need to do is alter the systems Date to one that was within the window of when the OS was originally released manually. Don’t forget to reset the time server setting back to auto afterwards. Any of the older installers you’ll need to do it that way.
As an example OS-X Lion (10.7.x) was released July 20, 2011 and was replaced by Mountain Lion 10.8 July 25, 2012. So I reset the systems date to January 2012 to be within the releases’s window.
You fell into Apples failure in their certificate signing! Here’s a bit more: [https://appleinsider.com/articles/19/10/24/if-youve-got-an-old-macos-install-image-it-will-probably-stop-working-today|If you've got an old macOS install image, it will probably stop working today]
Here’s a set of links to the updated installers. Jump down to Step 4 in all four:
[https://support.apple.com/en-us/HT208202|How to upgrade to macOS Sierra]
[https://support.apple.com/en-us/HT208969|How to upgrade to macOS High Sierra]
[https://support.apple.com/en-us/HT210190|How to upgrade to macOS Mojave]
'''You can also cheat with your current installers!''' All you need to do is alter the systems Date to one that was within the window of when the OS was originally released manually. Don’t forget to reset the time server setting back to auto afterwards. Any of the older installers you’ll need to do it that way.
As an example OS-X Lion (10.7.x) was released July 20, 2011 and was replaced by Mountain Lion 10.8 July 25, 2012. So I reset the systems date to January 2012 to be within the releases’s window.