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Lenovo ThinkPad Edge E445 NM-A231 BIOS

BIOS NM-A231 Added: Jul 14, 2021 RAR · 2.9 MB

File details

TypeBIOS
BrandLenovo
ModelThinkPad Edge E445
Board numberNM-A231
Board maker (ODM)Compal
Revision1.0
DeviceLaptop
FormatRAR
Size2.9 MB
AddedJuly 14, 2021
Updated
Original file nameNM_A231_AAVE1_ThinkPad_Edge_E445_E455_REV1_0_Lenovo_E455C_NM_A231.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 ThinkPad Edge E445 laptop, Compal board NM-A231 at revision 1.0, distributed as a RAR archive of about 2.9 MB. Technicians use a dump like this to reprogram the SPI flash chip with a programmer after a corrupted BIOS or a failed update. The original file name also references the E455 and E455C, so compare the board number and revision printed on your motherboard before flashing anything. Back up the existing chip contents first so you have a way to recover if the write goes wrong.

The catalog also lists 1 schematic and 2 BIOS dumps for board NM-A231.

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 ThinkPad Edge E445 NM-A231. 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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