Firmware archive for the EG70BZ motherboard at revision 2.1, with the extra EG70BZV105 token that likely denotes a firmware build, though its meaning is not certain. The name gives no laptop brand. Inside the 1.59 MB RAR is a BIOS dump for reflashing the SPI chip on a board that fails to start or has corrupted firmware. Check that the PCB reads EG70BZ Rev 2.1, read and store the original chip before writing, and confirm the dump size matches the flash capacity so it fits correctly.
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 .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 →