Now in 2018 as macOS Mojave is released I would highly recommend you to install macOS Mojave on your mac because it contains many bug fixes, new features and also apfs file system is more stable as compared to macOS high sierra. But if your mac is not supported by macOS mojave then you can download macOS high sierra from these download links.
This article contains links which can be installed on a real mac as well as can be used to build a Hackintosh.
Download from the apple app store.
macOS high sierra can still be downloaded from the official app store, whenever Apple releases a new version of macOS they make the older version of macOS hidden but still they can be accessed and installed on a mac.
To download macOS high sierra from apple app store go to this link, it will automatically open the app store if you are opening the link on a mac.
Download using the macOS High sierra patcher tool.
Many have reported that the file downloaded from the official Apple app store is of only 20MB but the actual size of the setup of macOS High Sierra 10.13.6 is 4.9GB. The issue is not fixed till now and is still present. Those who have faced this issue you can use this method to download the full setup of macOS High Sierra from apple servers.
The patch tool is developed by Collin to install macOS high sierra on unsupported Macs. The primary job of the tool is to patch the installer so it can be installed on unsupported Macs but through this tool, you can also download the installer.
To download the full macOS high sierra installer simply download the tool from the developer’s Google drive then run the tool.
Now, from the toolbar click on “Tools” and then click the download option, then wait for the download to complete and the installer will appear in the Apps folder.
Download using torrent (Official .app not DMG).
If you prefer using torrents or have limited bandwidth per day then you can also download the installer using torrent. This is the official App present in the app store and not modified for Hackintosh, So you can use it to upgrade your mac.
Download from Apple’s server.
The download links present in this section are from Apple’s server directly. You can download every version of macOS from the apple server directly. However you will not get a single .app format from it, they are in dmg format and are multiple files and cannot be used directly to upgrade your system to macOS high sierra. But you can use these images to make a bootable USB from these images use can restore the images from disk utility into a USB drive and try to boot with it. A more detailed guide can be found in insanlymac.com but it is Hackintosh focused but it will also work on a real mac.
The direct download links for macOS high sierra 10.13.6 from Apple’s servers are:-
Download macOS high sierra dmg for Hackintosh.
This dmg image is converted from the macOS high sierra 10.13.6 app. It is only for building Hackintosh. The dmg already includes clover bootloader, so you can restore the image and install the OS on your pc. Here in HackintoshPro, we have a much detailed guide on how to install macOS high sierra on pc.
While macOS Mojave is released macOS high sierra still can be download and installed from the app store. If you are looking for installing or upgrading to high sierra on a mac I highly recommend you to download the app from the Apple app store because it is the easiest method, but if in some case you are not able to download the app from app store then try downloading the dmg files from the Apple’s servers directly and create a bootable USB from it and then install it on your mac.