MacOS High Sierra errors

Hi all,
I'm trying to upgrade my desktop to the latest Mac OS. I'm going vanilla and using clover, so I've created a bootable USB. I've managed to get the USB to install onto the HDD I've got. When I just the installer on the HDD I get two errors. The first being : "An error occurred while verifying firmware. Quit the installer to restart your computer and try again." - and when I restart the PC and launch the installer again I get : "The path /System/Installation/Packages/OSInstall.mpkg appears to be missing or damaged. Quit the installer to restart your computer and try again".
Anyone had these issues before and found a way round them?
Thanks guys!

submitted by /u/hantoo
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