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Lenovo T490 FP531 NM-B902 BIOS

BIOS NM-B902 Added: Feb 1, 2022 RAR · 24 MB

File details

TypeBIOS
BrandLenovo
ModelT490
Board numberNM-B902
PlatformFP531
Board maker (ODM)Compal
Revision1.0
DeviceLaptop
FormatRAR
Size24 MB
AddedFebruary 1, 2022
Updated
Original file nameLENOVO_T490_MB_FT490_FT492_FT590_FP531_NM_B902_REV_1_0_2019_07_30.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

BIOS dump for the Lenovo T490 laptop, board number NM-B902, revision 1.0, platform FP531 with Compal as the ODM. The archive is a RAR file of about 23.9 MB. Technicians use a dump like this 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-B902 and 1.0, and read and save the original chip contents as a backup.

For board NM-B902 the catalog also has 1 BIOS dump.

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-B902. 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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