BIOS firmware archive for the HP Compaq CQ58-281SR laptop, product number C6J52EA, packed as a RAR of 3.36 MB. The name gives no motherboard number or revision, so read the board code silkscreened on the PCB and confirm it suits this unit before flashing. Technicians use such dumps to revive a dead or looping board by writing the SPI flash with a programmer such as a CH341A. Extract the archive first, back up the original chip contents, and confirm the image size equals the chip capacity, since a mismatched image will not fit.
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 (5)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 16 May 2018 | Open file on RM Schematics |
| @biosarchive | 12 Sept 2018 | Open file on RM Schematics |
| @pepeelectronica | 24 Apr 2022 | Open file on RM Schematics |
| @schematics_bios | 25 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 1 Aug 2026 | 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 →