BIOS image for the Positivo mainboard POS-EIBTPDC, 3.65 MB in RAR format, with no laptop model, version or flash chip named in the file name. The same board code also appears with the Positivo T50, so it may be another dump for that platform, though the name does not confirm it. Compare the two before choosing one. Program it into the SPI flash with a programmer such as a CH341A after backing up the original. Check that the board code printed on the PCB and the chip capacity both match.
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 →