Niresh (also known as Hackintosh Zone) is a popular "distro" (distribution) of macOS modified to run on standard PC hardware. While these distros are often sought for their "one-size-fits-all" automated installers, they are generally discouraged by the modern Hackintosh community due to security risks and system instability. Understanding Niresh macOS High Sierra
Instead of an old Niresh DMG, do a installation of a newer macOS version:
If you search for that keyword today, you are chasing a ghost. The "updated Niresh High Sierra DMG" does not exist. Those claiming to have it are either misinformed or malicious.
– macOS is proprietary software owned by Apple Inc. Distributing modified or pre-installed DMG files without Apple’s permission violates copyright laws. “Niresh” releases are unauthorized third-party modifications.