BIOS firmware for the Positivo T50 laptop on mainboard POS-EIBTPDC, archived as a 3.67 MB RAR. Positivo is a Brazilian brand, and the POS- board numbering is its own. Such a dump is normally written to the SPI BIOS chip with a programmer when the notebook powers up but shows no image. It also helps when the BIOS was corrupted by a failed update. Before flashing, save the original chip contents, then confirm that the PCB carries the same board code. The image size must match the chip capacity.
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 →