This happens when using a release of the macOS Catalina Installer App that is incompatible with the version of Catalina Patcher you are using. I get an error saying "The installer is damaged, and can't be used to install macOS".The 2007 iMac 7,1 is compatible if the CPU is upgraded to a Penryn-based Core 2 Duo, such as a T9300. 2006-2007 Mac Pros, iMacs, MacBook Pros, and Mac Minis:.Macmini5,x (systems with AMD Radeon HD 6xxx series GPUs will be almost unusable when running Catalina.).Early-2009 or newer Mac Mini or white MacBook:.Late-2008 or newer MacBook Air or Aluminum Unibody MacBook:.iMac12,x (systems with AMD Radeon HD 5xxx and 6xxx series GPUs will be almost unusable when running Catalina.).iMac11,x (systems with AMD Radeon HD 5xxx and 6xxx series GPUs will be almost unusable when running Catalina.).Early-2008 or newer Mac Pro, iMac, or MacBook Pro:.There might be old copies of Lion, Mountain Lion, and even Snow Leopard for sale on sites like eBay. Non-developers can buy OS X Mountain Lion ($19.99) and OS X Lion ($19.99) from Apple directly. Apple will email you an unlock code, which you can redeem in the Mac App Store. If you have a valid Apple Developer account, you might be able to download older versions from /downloads. This will put an installation app in your Applications folder, which you should leave there. Once any of these downloads are complete, mount the. Leave the installation app in your Applications folder.ĭirect Disk Image Links for Older macOS Downloads Once any of these downloads finishes, do not open the installer to begin the installation. Mac App Store Links for Older macOS Downloads
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