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Lenovo X390 FX390 NM-B891 BIOS (REV 2.0)

BIOS NM-B891 Added: Jan 8, 2023 RAR · 31 MB

File details

TypeBIOS
BrandLenovo
ModelX390
Board numberNM-B891
PlatformFX390
Board maker (ODM)Compal
Revision2.0
DeviceLaptop
FormatRAR
Size31 MB
Markstested by uploader
AddedJanuary 8, 2023
Updated
Original file nameLENOVO_X390_FT491_FX390_NM_B891_REV_2_0_2019_01_28_WORKING_BIOS.rar

Where to get the file

Opens the matching file on RM Schematics, or its source details if it is not catalogued there yet.

Alternative links

No other copies are known yet.

AwesomeHeader does not store this file. It was published in a public Telegram channel; the links above lead to the original post and its copies.

Description

From the original post:
LENOVO X390 FT491 FX390 NM-B891 REV 2.0 2019-01-28 WORKING BIOS 100%

BIOS dump for the Lenovo X390 laptop, board NM-B891 revision 2.0, platform FX390 from the Compal design. The uploader marks it as tested, and the archive is a RAR file of about 30.9 MB. A dump like this is used to reprogram the SPI flash chip with a programmer after a corrupted BIOS or a failed update. Before flashing, confirm that the board number and revision on your motherboard match NM-B891 rev 2.0, and save the original chip contents as a backup. The tested mark comes from the uploader and has not been independently verified.

For board NM-B891 the catalog also has 1 schematic, 1 boardview file, and 11 BIOS dumps.

Description generated from the catalog data. ·

How to open it

A BIOS dump is written to the SPI flash chip with a programmer such as the CH341A and a SOIC8 clip. Read and save the original chip contents twice before writing.

Guide: Flash a Laptop BIOS with a CH341A Programmer →

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Questions about this file

How do I flash this BIOS dump?

Write it to the SPI flash chip with a programmer such as the CH341A and a SOIC8 clip. Read and keep the original contents first, and check that the chip size matches the dump.

Will this BIOS work on my board?

Only if the board number and revision match: Lenovo X390 FX390 NM-B891. Dumps from a different board or revision can leave the board dead.

What does “clean ME” mean?

The Intel ME region in the dump has been reset, so it can be used on another board of the same model. Keep your original dump and transfer serial numbers if needed.

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