Firmware archive for the Dell Inspiron 14z 5420, packed as a 3.74 MB rar file and associated with the Quanta board DA0R08MB6E2. Quanta uses the DA0 plus project code plus MB numbering pattern, with the trailing characters indicating revision. Use the dump to rewrite the SPI BIOS chip with a programmer when the machine is dead, loops on power or shows no picture after a failed update. Before flashing, compare the PCB marking with the board number, back up the original chip and confirm the image size matches the flash memory.
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 →