Main BIOS dump for the Casper A15HE, listed as using the A15HC board revision 2.1 in the version with a discrete NVIDIA graphics chip. The 7z archive is 1.94 MB. Variants with and without dedicated graphics usually need different firmware, so match the GPU population on your board before flashing. Reprogram the SPI chip with an external programmer, keep a full backup of the original read, and confirm the board number and revision printed on the PCB agree with A15HC rev 2.1.
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 →