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Lenovo T490 FP531 NM-B901 BIOS

BIOS NM-B901 Added: Oct 18, 2022 RAR · 14 MB

File details

TypeBIOS
BrandLenovo
ModelT490
Board numberNM-B901
PlatformFP531
Board maker (ODM)Compal
Revision1.0
DeviceLaptop
FormatRAR
Size14 MB
AddedOctober 18, 2022
Updated
Original file nameLENOVO_T490_FT490_FT492_FT590_FP531_NM_B901_REV_1_0_2018_12_29.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 T490 FT490 FT492 FT590 FP531 NM-B901 REV 1.0 2018-12-29

BIOS dump for the Lenovo T490 laptop, board number NM-B901, revision 1.0, platform FP531 and ODM Compal. The archive is a RAR of about 14.5 MB, and the original file name also lists related models FT490, FT492 and FT590. A BIOS dump like this is used to reprogram the SPI flash chip with a programmer after a corrupted BIOS or a failed update. Before writing anything, confirm that your board number and revision match the file, and read out and save the original chip contents as a backup.

The catalog also lists 2 schematics, 1 boardview file, and 11 BIOS dumps for board NM-B901.

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 T490 FP531 NM-B901. 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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