Download the Installer

Download the installer image.

Get the macOS Installer from gibMacOS

  1. Run the gibMacOS.bat (Windows) or gibMacOS.command (macOS, with right-click open) inside the downloaded or cloned gibMacOS folder

  2. A Command Prompt window (Windows) or Terminal window (macOS) should appear. If you are doing a Network Installation, enter r to toggle Recovery Only mode. Else, don't

  3. It should refresh the list after you toggle the mode. From there, you should see a list of macOS versions. Enter the number in front of the latest version (by checking the date) of the highest supported macOS version of you system which mentioned in Requirements.

  4. Press Enter and it should start downloading. Be patient while downloading the files. - With Recovery Only turned on, it will only download 1 file - Without Recovery Only , it will download 11 files.

  5. Once it finishes downloading, you can proceed to the Network Installer Guide or Offline Installer Guide

Only choose 10.13.6, 10.14.6 and 10.15. Other versions are not supported.