Download macOS Monterey 12 or Big Sur 11 Full installer via Apple SUS & InstallAssistant.pkg
You can download the full installer of macOS Big Sur from Apple’s own software update servers. The InstallAssistant.pkg includes the entire Install macOS Big Sur.app. Run the pkg and it will put the entire Big Sur install app into your Applications folder!
macOS Monterey Final Installers here >
1. Download macOS 12.7.6 -Apple
macOS Big Sur Final Installers here >
1. Download macOS 11.7.10 - Apple
