BIOS together with EC firmware for an Acer Aspire A315 series laptop, with the board identified as NB8609_PCB_MB_V4, in a 3.84 MB RAR archive. Having both images lets you restore the main system flash and the embedded controller that handles power button, charging and keyboard functions. Flashing is done with an SPI programmer or the EC tool matching the controller. Match the V4 board marking on the PCB, save the original chips before writing, and verify each file's size against the flash chip it targets.
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 →