BIOS firmware package for a Casper notebook identified as CHD, labelled as the build for the discrete graphics variant, supplied as a 2.84 MB ZIP archive. The name gives no board number, so confirm the motherboard model and whether the unit actually carries a dedicated GPU before using it, since integrated and discrete versions often need different images. Technicians typically write such dumps to the SPI flash with a CH341A or similar programmer; read and save the original chip contents first.
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 →