Acer Aspire E1-471G BIOS material in a 1.78 MB RAR archive, labelled New MCS. That tag is not explained in the name and may simply mark a newer or alternate dump version, so treat it as unverified. Extract the archive and compare the image size with the capacity of the flash chip on your board before use. A dump like this is normally written with an external SPI programmer when a laptop shows no display or loops on power. Back up the existing chip contents first so you can roll back.
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 .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 →