BIOS for the Biostar J1800NH motherboard with DDR3 memory, board version 6.0, in a 3.63 MB rar archive. J1800 refers to the Intel Celeron J1800 integrated platform carried on this mini board. Check that the version printed on your PCB reads 6.0, since firmware between board versions can differ. Before writing with a programmer, back up the current SPI chip and confirm that the extracted image size matches the flash capacity, or the write will fail.
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 →