BIOS firmware package for the Casper C500 laptop, labelled for board D15D revision 2.1 and packed as a 7z archive of 3.28 MB. The name does not say whether it is a full SPI dump or a region file, so open the archive and inspect the image size before use. Technicians use such dumps to recover a bricked board by writing the chip with an external programmer such as a CH341A. Confirm the D15D marking and revision on the PCB, read and save the original chip contents first, and make sure the image size matches 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 @biosfiles. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →