Macos High Sierra 10136 Dmg [updated] Jun 2026

Once your bootable USB is ready, you can proceed to install macOS High Sierra 10.13.6 on your target machine. Shut down the Mac where you want to install High Sierra. Insert the bootable USB drive into a USB port.

Your Mac will reboot several times during this process. Do not unplug the USB drive or turn off the machine until the setup assistant screen appears. Troubleshooting Common High Sierra Installation Issues macos high sierra 10136 dmg

Before starting the installation, turn off your internet connection. Open Terminal from the Utilities menu in the top bar and change your system clock to an older date when the certificate was still valid. Type date 010100002019 (which sets the date to January 1, 2019) and hit Enter . Close Terminal and try the installer again. APFS vs. Mac OS Extended Formatting Errors Once your bootable USB is ready, you can

If your Mac is compatible, you can often upgrade directly from 10.13.6 to macOS Big Sur via the App Store. using the 10.13.6 installer? Your Mac will reboot several times during this process