Main system BIOS image for the Toshiba Satellite L740 and L745, provided as a 4 MB ROM file intended for the board's SPI flash chip. It is the counterpart to a separate EC firmware file for the same models. Technicians use such a dump to recover units stuck on a black screen after a failed update or chip corruption, programming it with a CH341A or similar tool. Read and archive the original chip before writing, and confirm the flash part is 4 MB so the image fits exactly.
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 @cidschematicandboardviewofficial. Enginerys does not host this file.
How to open a .rom file
A BIOS image as shipped by the vendor (commonly AMI) — often the BIOS region only, without descriptor or ME.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →