The old method is not working on macOS BigSur. However, we can fix the Unknown CPU name or change it to any CPU type you want. I will describe this simple method using terminal code. 1. Access the root folder a) Replace the value in Config.plist>>NVRAM>>Add>>7C436110-….9f82>>csr-active-config>>FF0F0000 then reboot in to Recovery mode. (This will break … Continue reading GuideHow to change your processor name in Big Sur