BIOS image for the Casper A15YA laptop, board revision 2.1, intended for the UMA configuration, meaning integrated graphics without a discrete GPU. A separate Discrete version of this firmware exists, so confirm which variant your board is before flashing, since the wrong image can lead to no display or a failed boot. Unpack the 7z archive with 7-Zip, then write the file with an SPI programmer such as a CH341A. Save a backup of the existing chip and confirm the image size fits the flash.
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 →