Unlocked BIOS for a Sony machine using the GD1A board variant, packed as a 699 KB RAR. Unlocked images normally have the BIOS password removed so a locked laptop can be recovered. A matching GD1B version exists, so check which variant your PCB carries before flashing. Write the image to the SPI chip with a hardware programmer only after reading and saving the original contents, and make sure the image size matches the chip capacity, otherwise it 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 @IT_SERVICE_WORLD. 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 | |
|---|---|---|
| @IT_SERVICE_WORLD | 1 Oct 2019 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 2 May 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 →