Mac users interested in Macos big sur patcher generally download:
Patched Sur is a UI patcher for macOS Big Sur. The application is designed to make it easy to run macOS 11 on unsupported Macs. This patcher hopes to allow any user of any knowledge to patch their Mac, while still giving you freedom on how you want to use your Mac.
macOS Catalina Patcher offers an easy way to run macOS Catalina on your unsupported Mac. Therefore, this application can help you create a modified install drive to use for installing macOS Catalina on computers that don't support this operating system.