BIOS and EC firmware for the HP DM4 on Wistron board 11212-1, stored in a 2.14 MB RAR archive. The name specifies a 4 MB image, so the BIOS targets a 4 MB SPI flash, while the EC part belongs to the embedded controller handling power and keyboard. The five-digit number with dash suffix follows the Wistron scheme. Use a programmer to restore corrupted firmware, keep a backup of the original chip, and check that the PCB number matches 11212-1 before writing anything.
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 →