Acer Aspire 4740 BIOS dump taken from a Macronix MX25L8005 flash chip. The 1.00 MB size corresponds to the 8 Mbit capacity of that part, so it suits boards carrying that chip. A technician writes this image with an SPI programmer when the laptop will not boot or shows a black screen after a corrupted update. Check the chip marking on your board, since the 4740 may also use larger flash, and save a backup of the original contents before erasing and programming.
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 @ComputerBIOSBinFile. 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 →