What progress I have made with this one has been little and frustrating. It seems not to matter whether I generate a config file using clover Configurator, make one manually, edit an existing one that has an smbios entry, the serial remains the same default clover one. I tried moving everything to the OEM folder, which is to say naming the folder in it to GA-Z77MX-D3H-TH, my motherboard's name; I'm told if you do that, clover defaults to that config.plist during boot. What gave me the idea was that if you press O on Clover's menu screen, you have the option of setting the smbios manually, there. It mentions the OEM folder, there. Entering a serial number, there, works. Once booted up, I click on About This Mac and More info and there is the serial number that I typed in. Next boot, it's back to the default. As I like to power down my computer when I leave the house, rather than put it to sleep, that isn't an option for me and typing out the serial, etc, manually at boot doesn't make sense. Are clover's defaults editable? All other things that I change in the config.plist work perfectly.