BIOS firmware package for the Casper CMY MB55 laptop, board identified as MB45II4 version 01, in the variant fitted with a discrete Nvidia graphics chip. The 2.94 MB zip archive should hold the SPI flash image for that configuration. Do not mix it up with the UMA (integrated graphics only) build, because the GPU setup has to match the board in hand. Read and save the original chip with a programmer before writing, and confirm that the image size equals the flash chip 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 @biosfiles. 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 →