Firmware archive identified only by the Quanta board number DAOHK8MB6E0, with no laptop brand or model given in the name. Quanta codes follow the DA0xxxMBxxx pattern, where the letter O here probably stands for zero, as in DA0HK8MB6E0, so compare the code with the silkscreen on your board. The 2.42 MB RAR most likely holds a BIOS dump for direct SPI programming. Save the existing chip contents before writing, make sure the image size matches the flash part, and check the board revision letter.
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 →