Archive for Lenovo board NM-A541, an LCFC design, tagged Q64, which likely refers to a 64 Mbit (8 MB) SPI flash variant of the BIOS image. Several firmware images exist for this board, so the tag helps pick the dump matching the flash chip actually soldered on the PCB. Read the chip marking before choosing a file, save the original contents with your programmer, and confirm the board code to avoid writing incompatible firmware. The 3.94 MB zip is consistent with a compressed full BIOS 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 @vinafix_bios. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.