BIOS dump for a Lenovo board identified as HS450 with board number NM-D231, taken from an SVT build at revision 1.0 and labelled as the content of chip U49. The NM- prefix marks an LCFC design, the Lenovo ODM. The zipped image is small at 177 KB, so it is likely a single-chip read such as an EC or a small SPI part rather than a full system BIOS. Read and save the original chip with a programmer first, and make sure the image size matches the capacity of U49 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 (4)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 23 Nov 2023 | Open file on RM Schematics |
| @generalbios | 16 Dec 2023 | Open file on RM Schematics |
| @generalbios | 17 Dec 2023 | Open file on RM Schematics |
| @generalbios | 14 Jul 2024 | Open file on RM Schematics |
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Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →