Once finished, do not click install. Look in your /Applications folder for a file named Install macOS Big Sur.app . Converting the App to a DMG
As Apple continues to evolve its operating systems and distribution methods, users can expect to see enhanced security measures and possibly new features in future updates, including macOS versions beyond Big Sur. macos big sur dmg download exclusive
While most users update via "Software Update," a standalone DMG (Disk Image) is essential for: Once finished, do not click install