Hi, Those question I can answer you. the certificate file you can del it or place it to anywhere you want. And the bios problems: You are right on it. After you flash your bios again with a newer version that haven't moded, it will lose the SLIC, If a newer version bios of your mainboard released, you have to request a moded version again at here. I am came from Hong Kong...sorry for my bad English skills. Hope you understand.