The official way to download (or the latest compatible version for your Mac) is through the Boot Camp Assistant on your macOS or via Apple Software Update within an existing Windows installation. Apple does not provide a direct "full text" or standalone installer download link for specific sub-versions of the 6.1 series on their public support site. Official Download Methods From macOS (Boot Camp Assistant): Open Boot Camp Assistant from the Utilities folder.
Check for and install available "Boot Camp Update" versions (e.g., 6.1.13 or newer). Method 3: Using Brigadier (Advanced) bootcamp 6.1.7866 download
You cannot directly download bootcamp 6.1.7866 from Apple’s official site by itself. Boot from macOS High Sierra 10.13.6 → Open Boot Camp Assistant → Action → Download Windows Support Software . The official way to download (or the latest
Choose a USB flash drive (16GB or larger, formatted as FAT) to save the drivers. Via Windows (Apple Software Update) Boot into your Windows partition on your Mac. Apple Software Update application from the Start menu. If a "Boot Camp Update" is available, select it and click Apple Support Alternative Manual Methods Check for and install available "Boot Camp Update"