BIOS / firmware archive for the Lenovo ThinkPad P52 mobile workstation, board code EP520, motherboard NM-B562 revision 1.0, sized 9.55 MB as a rar. The NM- prefix marks an LCFC design, the ODM that builds many Lenovo and ThinkPad boards. Technicians reprogram the SPI flash with such dumps when a machine fails to POST after a bad update or corruption. ThinkPad images carry machine-specific data, so dump and keep the original chip contents before writing, and check that the board label shows NM-B562 Rev 1.0.
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 →