BIOS image of 4.00 MB in raw .bin form, named only E1-421, which reads like a laptop model designation, though the name gives no board number, revision or brand. A file of this size typically matches a 32 Mbit SPI flash chip, so check the capacity marking on the chip before programming. Technicians use such images to recover a dead or corrupted board with a CH341A or similar programmer. Read and save the original contents first, and compare the board number on the PCB with the source of this dump.
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 @bios_laptop. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →