If you only have a DMG that is not the installer app but a bootable image, restore the DMG to USB:
macOS High Sierra 10.13.1 update, released on October 31, 2017, focuses on stability, security, and minor feature additions. While the full installer for High Sierra is approximately , the 10.13.1 specific update package was originally around depending on the specific machine configuration. Key Features & Changes in 10.13.1 New Emoji Support : Introduced over 70 new emojis macos high sierra 10.13.1 dmg
Once the download is complete, the installer will automatically launch. You can find the DMG file in the "Applications" folder. If you only have a DMG that is