HP550 HP750 NM-D491 REV 2.0 U2001

BIOS .rar 25.8 MB Shared

Firmware archive for the Lenovo NM-D491 board, revision 2.0, an LCFC design, with HP550 and HP750 as platform codes. The U2001 token is most likely a firmware version, but the name does not confirm this. At 25.8 MB the package probably contains several images, such as a BIOS dump and EC firmware. Check each file's size against the chip it targets before programming. Read and save the original SPI contents first, since they hold serial and identification data.

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 (2)

The same file was posted more than once. If one link is dead, try the next.

How to open a .rar file

Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.

7-ZipWinRARThe Unarchiver (macOS)

More about .rar files

Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →

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