Acer BIOS image in raw .bin form, 8 MB in size, labelled only with the token USOO, which does not identify a model or board number. Because the name gives no model, confirm the target machine by other means, such as the board number silkscreened on the PCB or the label on the original chip. An 8 MB dump matches a 64 Mbit SPI flash chip such as a 25-series part. Read and save the existing chip contents with a programmer before writing anything, and compare the layout of the two images before you commit to one.
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 @biosfilebins. 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 →