We maintain a macOS product whose installer uses custom InstallerSection plugin bundles to show configuration panes during install. Starting with macOS 27 beta 6, all of our plugins stopped loading in Installer.app — the panes never appear and the install fails because our preinstall step depends on data the panes collect.
A third-party PKG installer that ships a custom Installer Plugin no longer displays one of its selection panes. The plugin bundle appears not to be loaded, so the pane that it provides is silently skipped and the user cannot choose the intended installation option.
This is regression for all latest updates eg. 15.8, 27.7, 28.0. This bug refuse open installer plugin for security reason in spite of the plugin and installer are correctly signed, notarized and works seamlessly in previous macOS versions. Workaround is copy installer (*.pkg) to local file system (home, desktop folder).
Hi, friends! Welcome to Installer No. 139, your guide to the best and Verge-iest stuff in the world. (If you're new here, welcome, barbecue sauce, and also you can read all the old editions at the Installer homepage.)
Hi, friends! Welcome to Installer No. 137, your guide to the best and Verge-iest stuff in the world. (If you're new here, welcome, happy phone season, and also you can read all the old editions at the Installer homepage.)
Download the macOS Golden Gate Full Installer – Public & Beta Versions.
This database will contain download links for macOS full Installer pkg files (InstallAssistant.pkg). This file is the same full installer that you would download directly from the App Store for Intel and Apple Silicon M1/M2/M3/M4 Mac Computers. The InstallAssistant.pkg is stored on Apple’s servers and contains the full “Install macOS.app”. Once downloaded, all you need to do is install the pkg and the full installer of macOS will be in your applications folder. This change was made when Apple revised the full installer for Big Sur. The InstallAssistant.pkg is not available for Catalina or Mojave.
UPDATED: 08/10/26
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Hi, friends! Welcome to Installer No. 136, your guide to the best and Verge-iest stuff in the world. (If you're new here, welcome, hope your neighborhood isn't as smoky as mine, and also you can read all the old editions at the Installer homepage.)
Hi, friends! Welcome to Installer No. 133, your guide to the best and Verge-iest stuff in the world. (If you're new here, welcome, happy belated Juneteenth, and also you can read all the old editions at the Installer homepage.)
This week, I've been reading about Sam Bankman-Fried and PE Guy and admin nights (which we should totally all do together one of these days), listening to Paul McCartney on Song Exploder, trudging through the bugs of the iOS 27 beta in order to use the good new Siri, once again trying and failing to switch to YouTube Music, free trial-hopping my way through the World Cup, finally upgrading my camera setup with the E …
Hi, friends! Welcome to Installer No. 132, your guide to the best and Verge-iest stuff in the world. (If you're new here, welcome, happy soccer, and also you can read all the old editions at the Installer homepage.)
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