Main BIOS image of 4.00 MB for the Acer Aspire 5740G, labelled big and OKOK to show it was tested working. It complements a smaller 128 KB file for the second firmware chip, so both may need writing when a board is fully restored. Program it into a 4 MB (32 Mbit) SPI flash with a CH341A, RT809 or similar programmer. Read and save the original chip first, verify the chip capacity matches, and check the motherboard revision against the one this dump came from.
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 →