Firmware package marked NBKB1415 version 1.0, with a 4 MB image and EC firmware noted in the name. NBKB1415 looks like a board or project code, but the name gives no brand or laptop model, so confirm compatibility by the marking on the PCB. The 2.33 MB ZIP may hold a combined BIOS and embedded controller image. Make sure the image size matches your SPI chip, back up the original contents with a programmer, and only then write it, since a wrong EC image can leave the machine without power-on or keyboard function.
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 .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 →