If you do need to use these installers, setting the system clock on your Mac to a date and time before the October 24th 2019 expiration date will allow these certificates to appear as valid again and any expiration-related issues should go away. If Apple does choose to re-sign these certificate with valid non-expired signing certificates, I’ll add code signature verification to the recipes.

One of the consequences of this is that I cannot use AutoPkg’s code signature verification as part of the AutoPkg recipes, since AutoPkg’s current code signature verification will error when it hit the expired certificates. As of June 30th, 2021, I do not know if Apple is planning to re-sign the installers with the current Software Update signing certificate. The installers for both OS X Lion and Mountain Lion include a Disk Image (DMG) file that can be restored to a volume and turn it into a fully-bootable installer. Instead, they install the Install.app for that version of OS X into the /Applications directory.Īnother thing to know is that the downloaded installers are signed using Software Update signing certificates which expired in 2019. This guide applies to the MacBook 2,1 through 4,1 and can also be. 1.- An existing Windows computer/Mac/Hackintosh: This is the computer where you will download and set up iAtkos. One thing to be aware of is that the downloaded installers do not themselves install the relevant version of OS X. 34K views 2 years ago In this video, we're going to install Mountain Lion (OS X 10.8) on an unsupported Core 2 Duo MacBook. These recipes will download the disk images linked to the relevant KBase articles, extract the installer packages stored inside the disk images and rename the disk images and installer packages with the OS name and version number. Mac OS X 10. pkg recipes for the following OS X installers: Now that Apple has made direct download links available for Lion and Mountain Lion, I’ve written AutoPkg. GateKeeper only affects installers that have been downloaded from the internet, so you can freely use any installers from your original MOTU product installer.

Mountain lion installer