Toshiba BIOS dump for the PT10ABX main board (also listed as PT10ABXG), revision 2.1, stored in a 1.74 MB RAR archive. The model is not stated, so identify the laptop by the board code on its PCB. Such firmware is written directly to the SPI flash with a hardware programmer to bring back a board with corrupted contents. Back up the original chip first, since it may hold unit-specific data, and check that the extracted image matches the flash capacity before programming and verifying.
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.
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 →