BIOS archive for the Toshiba Satellite L655D-S5102BN, built on the Quanta BL7 board and labelled for DA0BL7MB6D0, with DA0BL7MB6E0 also listed as a match. Quanta's DA0xxxMB numbering marks the PCB revision with the final characters, so check your board against both codes. Use it to reprogram the SPI flash with an external programmer when the firmware is corrupted. Read and store the original contents first, and verify that the image size inside the zip matches your flash chip before writing.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →