Firmware dump for the CQ42 notebook on Quanta board DAOAX3MB6C2, revision C, stored as a 1.63 MB RAR. The board code is written with the letter O where Quanta normally prints DA0, and the CQ42 name matches a Compaq Presario model, though the brand is not given. This image is meant for reprogramming the BIOS SPI chip with a hardware programmer to recover a dead or looping board. Back up the existing chip, confirm the board marking and revision C, and make sure the size suits the installed flash.
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 (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 19 Mar 2018 | Open file on RM Schematics |
| @biositechyangiyer | 19 May 2020 | Open file on RM Schematics |
| @biosdumpcomputer | 26 May 2022 | 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 →