PSA: Installing macOS Golden Gate 27 beta in a UTM VM

If you re getting an error trying to install the macOS 27 beta ipsw from developer.apple.com/downloads/os in UTM… … I have a solution for you. Some recommend downloading Xcode 27, installing it, and installing its MobileDevices.pkg and maybe CoreTypes.pkg and a bunch of others. Some report it works, others that it doesn t. Here s what worked for [ ]