BIOS firmware for a Casper laptop on the A15HC board, provided as a 1.83 MB 7z archive. The name states no revision, GPU variant or flash chip, so the contents need checking against your hardware before use. A dump like this is written to the board's SPI flash with a programmer such as a CH341A when the machine shows no image or will not boot. Read and archive the original chip first, and verify the image size equals the flash capacity to avoid a failed write.
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 →