Firmware package for a laptop mainboard numbered DA0UM3MB8E0, containing both the main BIOS and the EC (embedded controller) firmware, in a 1.74 MB RAR archive. The DA0 prefix follows the Quanta numbering pattern, so the board was made by Quanta for a brand not named here. The EC code controls power-on, charging and keyboard functions, and a corrupted copy often causes no-power faults. Read and back up both chips with a programmer before writing, and check that each image matches its chip size.
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 →