BIOS dump for the Lenovo ThinkPad P1 mobile workstation, board LPM-2 with mainboard number 18809-2, in a RAR of about 15.6 MB. The five-digit-dash number pattern belongs to Wistron, the ODM that built this board for Lenovo. A technician flashes such an image to the SPI chip with a programmer to recover from firmware corruption or no-boot faults. Confirm the board number on the PCB, back up the original chip before writing, and make sure the image size matches the installed flash device.
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 →