BIOS firmware for the Dell Inspiron 14R 7420 and 5420, built on Quanta board DA0R08MB6E2, revision E2, stored in a 2.96 MB RAR. The DA0xxxMBxxx code is the Quanta ODM numbering pattern, with the final characters marking the PCB revision. Before flashing the SPI chip with a programmer, save a copy of the original contents, since it carries service tag and system data, and confirm the image size matches the chip. The board label on the PCB should read DA0R08MB6E2 before writing.
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.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 27 Feb 2021 | Open file on RM Schematics |
| @abgm_manutencao_bios | 18 Aug 2021 | Open file on RM Schematics |
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 →