The document provides steps to update the BIOS on a zh7 machine: 1) Rename the BIOS archive file from "zh7 bios" to "zh7ia32.fd"; 2) Copy the BIOS file and Flashit.exe tool to the root of a USB drive; 3) Insert the USB drive into the zh7 machine, press and hold Fn+Esc, and press and release the power button to boot into BIOS update mode. The USB drive LED will glitter for 3-7 minutes during the initial update.