Tested BIOS dump for a Sony laptop identified as PCG-31112L, sized for a 4 MB flash chip and stored in a RAR archive. PCG numbers are Sony's VAIO model codes. The file is used to rewrite the SPI BIOS chip with an external programmer when the machine fails to start because of corrupted firmware. Read and keep a copy of the existing chip before writing, confirm the chip really is 4 MB so the image fits, and verify after programming to ensure a successful write.
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 | 18 Feb 2024 | Open file on RM Schematics |
| @generalbios | 19 Feb 2024 | Open file on RM Schematics |
| @generalbios | 6 Mar 2024 | Open file on RM Schematics |
| @generalbios | 14 Jul 2024 | Open file on RM Schematics |
| @generalbios | 4 Nov 2024 | 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 →