RAR package with firmware for HP systems built on Quanta mainboard DA0PAMB46A1, revision 1A, variant 0864B, for an 8 MB SPI chip. Sibling archives carry tags 0864A, 0864D and 086C8, so pick the one that matches your system before flashing. A technician typically uses such a dump to revive a board with corrupted firmware, writing it directly to the flash chip. Back up the original contents first, and check that the chip capacity and board revision are correct.
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 →