BIOS archive for the Lenovo G550 notebook tagged with the number 2958, which is probably the machine type; no motherboard number or revision is stated in the name. Before use, read the board code on the PCB and confirm it fits this firmware. The image is intended for writing to the SPI flash with an external programmer when the laptop shows no image or does not start. Save the original chip dump first, since it can hold serial data, and compare the file size with the flash capacity.
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 @Laptopdesktopbios. 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 →