BIOS and EC firmware set for the NK50, NK60 and NK70 family, covering the KK, KJ and KH variants, packed in a 6.72 MB RAR. The archive likely holds separate images for each variant, so choose the one that matches your board exactly. The system BIOS goes to the main SPI flash, while the EC firmware controls power, keyboard and charging functions. Back up both original chips before writing with a programmer, and confirm the image sizes match the flash chips fitted.
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 →