A 4 MB BIOS binary for an Acer Aspire 3750G laptop with an Intel Core i3 and an NVIDIA GeForce GT 520 graphics chip, on board EIH31, revision 2.1. A 4 MB size matches a 32 Mbit SPI flash chip. Confirm the EIH31 marking and rev 2.1 on the PCB before use. Read the current chip with a programmer and keep that backup, then write and verify the image. A wrong GPU or board variant can leave the machine without video or booting.
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 .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 →