Since you cannot download a raw .bin dump directly from the manufacturer, you have to rely on technician forums. Look for files verified by "Clear ME" status:
: Acer Aspire 3 A314-32, A315-32, and Acer Aspire 1 A114-32. Processor Support da0z8gmb8f0 rev f bios bin better
The BIOS bin file is the raw binary firmware used by technicians to "re-flash" the BIOS chip manually using an external programmer (like the CH341A). A "better" file is one that is: Verified Clean: Since you cannot download a raw
: Firmware-level updates to protect against vulnerabilities. Hidden Features da0z8gmb8f0 rev f bios bin better