BIOS archive for a Positivo BGH G870 notebook. Apart from the model name it gives no board number, revision or chip size, so the motherboard code should be checked against the contents before use. At 2.63 MB, the RAR probably holds one or more flash images for writing to the SPI chip with an external programmer during no-boot recovery. Read and store the existing firmware first, compare the image size with the installed flash chip, and confirm the board matches before 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 @afsbiosfree. 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 →