Main BIOS together with EC firmware for the Acer Aspire 3 A315-53G-58YU, board C5V01 with Compal number LA-E892P, revision 2A. The RAR is 4.99 MB. Carrying both images lets a technician restore the system BIOS and the embedded controller code, which handles power-on, charging and keyboard functions. Flash with an SPI programmer after backing up the current contents. Confirm the PCB reads LA-E892P rev 2A rather than an earlier revision, and verify that the main image size matches the installed chip.
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 →