Skip to content

Lenovo IdeaPad EG431 FG5N2 NM-B661 BIOS (REV 1.0, 8 MB)

BIOS NM-B661 Added: Jan 30, 2022 RAR · 7.5 MB

File details

TypeBIOS
BrandLenovo
ModelIdeaPad EG431
Board numberNM-B661
PlatformFG5N2
Board maker (ODM)Compal
Revision1.0
DeviceLaptop
FormatRAR
Size7.5 MB
BIOS chip size8 MB
AddedJanuary 30, 2022
Updated
Original file nameLenovo_IdeaPad_EG431_EG532_FG5N2_NM_B661_Rev1_0_W25Q64FWSIQ.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 IdeaPad EG431 laptop, board number NM-B661, revision 1.0, platform FG5N2 with Compal as the ODM. The archive is listed for an 8 MB flash chip and is about 7.5 MB in size. Technicians use a BIOS dump like this to reprogram the SPI flash with a programmer after BIOS corruption or a failed update. Before flashing, confirm that the board number and revision on your motherboard match the file, and back up the original chip contents first.

The catalog also lists 3 schematics, 4 boardview files, and 10 BIOS dumps for board NM-B661.

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 →

Browse more

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 IdeaPad EG431 FG5N2 NM-B661. 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.

Report a dead link or request removal