Dell BIOS image for a Winbond W25Q64BV flash chip, a 64 Mbit (8 MB) SPI device, packed as a ZIP. The BF token is not explained and could not be expanded with certainty, and no model or board number appears, so identify the target notebook before use. Programming is normally done with a CH341A, RT809 or similar programmer after desoldering the chip or clipping onto it. Save the existing contents first, and check that the extracted file is exactly 8 MB so it matches the chip.
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 @SCHEMATICWORLD. 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 →