Working BIOS for a Sony VAIO laptop with motherboard DAHKCAMB6A0, revision A. The DA-prefixed board number follows the Quanta pattern, showing that Quanta manufactured the board for Sony. No model name is given, so identify the machine by the board number. The 8.19 MB RAR is meant for reprogramming the SPI chip with an external programmer when the laptop powers on without display. Confirm the board number and revision on the PCB, check the image size against the chip, and back up the original contents first.
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 | 29 Aug 2022 | Open file on RM Schematics |
| @Laptopbiossolutions | 3 Dec 2025 | 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 →