I would really love to see if, with the help of this great community, I could find a way to successfully convert these Os High Sierra update .pkg files or their original DMG bundles into useful .app installers that could be mounted to flash USB with the terminal createinstallmedia command from applications like we are doing with the main OS installers for Hackintoshes as I could then share this with so many other people running a HFS+ file system on OS Sierra to keep integration with other internal HFS+ disks.
I appreciate any continued suggestions or support. Cheers