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Although it’s mostly just an annoyance to redownload everything now, the situation is more troubling over the long term. This isn’t the first time we’ve needed to rebuild our collections of macOS installers-see “ Previously Downloaded OS X Installers No Longer Work” (2 March 2016)-and it won’t be the last. Softwareupdate -fetch-full-installer -full-installer-version 10.13.6 In the Year 2525

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This command downloads the latest Install macOS application to your Applications folder.Īnd this one downloads 10.13.6 specifically. This seems to work with versions of 10.14 Mojave and 10.13 High Sierra, but nothing older.

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Speaking of Terminal, Armin Briegel has written on his Scripting OS X blog that the softwareupdate command has a new option in Catalina that lets you download the full installer for a specific version of macOS. Quit Terminal and continue the install.Ĭatalina Enhances softwareupdate Command-Line Tool.Enter sudo date 0201010116, press Return, and enter your password.In the installer, choose Utilities > Terminal.

To change the date from Terminal (which is likely all that will be accessible), follow these steps, which set it to 1 February 2016: Before you install, set the clock on the Mac to a date when the certificate was valid, perform the install, and then reset the date back after installation. However, if you have installers for 10.9 Mavericks, 10.8 Mountain Lion, and 10.7 Lion, TidBITS Talk reader gastropod suggested a workaround for their expired certificates. Historically, they appeared in the App Store app, in your list of purchased items, but the only operating systems still showing up there for me are the developer beta of Sierra and the GM candidate for El Capitan (and I doubt they’d work anyway). If you want to rebuild your archive, you can download new installers from links on these pages:Īpple says that earlier versions are not available for download, and as far as I can tell, that’s true. The Finder may report that those installers can’t be verified and may have been corrupted or tampered with during download.Īpple has now re-signed and re-released older installers, giving them a new expiration date of 14 April 2029-nearly 10 years in the future. The people who are being impacted are Apple consultants and IT admins who have built troubleshooting toolkits that contain a selection of macOS installers for rebuilding Macs with whatever version of macOS is required. That has happened again, since many, if not all of Apple’s recent installers had an expiration date of 24 October 2019, which came and went last week.įor most Mac users, this kerfuffle is largely irrelevant-if you need an installer for an older version of macOS, you’ll get one that will work when you download it. On his Der Flounder blog, Rich Trouton explains what happens when these certificates expire-Apple reissues the installers with new certificates. That’s sensible, but there’s a gotcha: the certificates Apple uses to sign these installers have expiration dates.

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Redownload Archived macOS Installers to Address Expired CertificatesĪpple digitally signs the installers used by its software updates to ensure that they haven’t been tampered with.

#1683: New M3 chips in updated MacBook Pros and iMac, record Apple Q4 profits on lower revenues, no more 27-inch iMacs.

#1684: OS bug fix releases, Finder tag poll results, Messages identity verification, blocking spambots, which Apple services do you use?.

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#1685: Hidden secrets of the Fn key, Emergency SOS via satellite free access extended, RCS support in Messages, Rogue Amoeba icon evolution.

#1686: Please support TidBITS, OS security updates, Apple services poll results, biking with an iPhone.

#1687: Feature-rich OS updates, recovering from a crashing bug in Contacts, Zoom for Apple TV, how much do you use widgets?.

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