Small EC firmware backup for a Dell 3015, stored on a Macronix MX25L5121E chip, a 512 Kbit serial flash. BEIFEN is pinyin for backup. At about 16 KB, the archive suits the separate embedded controller flash rather than the main BIOS. A bad EC image can cause no-power, charging or keyboard faults, so reflashing this chip is a common repair. Dump the existing chip before writing, and confirm the board actually uses the MX25L5121E so the image fits.
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 .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 →