Firmware file for a board marked only SP15 at revision 2.1, RAR of about 3.48 MB, with no brand or laptop model in the name. Because the name is sparse, compare the board code and revision silkscreened on the PCB before you use this dump. Typical use is restoring a damaged SPI flash with a programmer such as a CH341A or RT809. Back up the existing chip contents before writing, and check that the image size matches the flash capacity, since an image of the wrong size will not fit.
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 @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →