BIOS firmware for the Lenovo ThinkPad T460 on motherboard NM-A581, revision 3, packed as a RAR archive and marked tested ok by its name. NM-A numbers follow the LCFC numbering used for Lenovo-designed boards. A technician flashes this image to the SPI chip with an external programmer when the laptop will not power on or POST because of corrupted firmware. Dump and keep the original contents first, since ThinkPad chips can hold machine-specific data, and verify the PCB revision and chip capacity match 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 @biosarchive. Enginerys does not host this file.
All sources (11)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 31 May 2020 | Open file on RM Schematics |
| @biositechyangiyer | 5 Jun 2020 | Open file on RM Schematics |
| @laptexlaptopbios | 28 Jun 2020 | Open file on RM Schematics |
| @one5technology | 21 Nov 2020 | Open file on RM Schematics |
| @BiosSchematicWorld | 4 Feb 2022 | Open file on RM Schematics |
| @pepeelectronica | 27 Apr 2022 | Open file on RM Schematics |
| @biosdumpcomputer | 26 May 2022 | Open file on RM Schematics |
| @skclappybios | 10 Apr 2024 | Open file on RM Schematics |
| @schematiclaptopramkushwaha | 9 Dec 2025 | Open file on RM Schematics |
| @schematics_bios | 27 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 3 Aug 2026 | Open file on RM Schematics |
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 →