BIOS and EC firmware for the C320R3 all-in-one, built on Quanta board DA0QUAMB6E0 revision E, packed as a 2.06 MB rar. The package includes separate system BIOS and embedded controller images. The EC handles power-on, the keyboard and battery functions, so a corrupt EC can also cause a no-power fault. Flash each image to its own chip with a programmer. Back up both chips beforehand, and confirm the DA0 board code and revision on the PCB.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →