Tested BIOS image for the Acer Extensa 4620 laptop, provided as a 1.00 MB raw binary suited to an 8 Mbit SPI flash. The tested mark suggests it was confirmed working on a real unit, though the board number and revision are not given, so compare against your motherboard before writing. Typical use is restoring a dead or no-display board by programming the flash chip directly with an external programmer. Make a full backup read of the original chip first and verify the written data before reassembling the laptop.
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 @abgm_manutencao_bios. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →