Before diving into the "how," it is essential to understand the "why." High Sierra was a pivotal update. Unlike the flashier Mojave or Catalina updates that followed, High Sierra was a "under-the-hood" update.
A: No officially, but yes practically. Apple no longer releases security patches for High Sierra (ended in late 2020). However, if you use a modern firewall, avoid sketchy websites, and use Chrome or Firefox (which still update their browsers for older OSes), you remain reasonably safe. macos high sierra 10.13 6 download full installer
Apple keeps the files on their servers but removes the download links from their website. GibMacOS simply rediscoveries those links. Before diving into the "how," it is essential
If you search for "macOS High Sierra" in the Mac App Store today, you might find a link, but it often redirects to the current macOS version, or it downloads a stub installer rather than the full package. Apple no longer releases security patches for High