A BIOS / firmware dump for Acer hardware. Shared as “N156B3_L0B_Rev (1).C1_Emachines_E642G_(Luirons_Bios).bin.rar” — a .rar file, 257 B.
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 @Satale_bios_esquemas_Laptop. 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.
7-ZipWinRARThe Unarchiver (macOS)
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →