BIOS binary for the HP Pavilion dv9500, AMD platform, according to the name. The trailing 1 likely marks a first copy or variant. At 1.05 MB, it is slightly bigger than a 1 MB chip, so check for padding or a header before programming. Make sure the motherboard really is the AMD version, because the dv9000 range also had Intel boards. Use an SPI programmer, keep a backup of the original chip, and verify after writing.
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 .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 →