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Lenovo B50-45 ZAWBABB LA-B291P BIOS

BIOS LA-B291P Added: Nov 9, 2020 ZIP · 2.5 MB

File details

TypeBIOS
BrandLenovo
ModelB50-45
Board numberLA-B291P
PlatformZAWBABB
Board maker (ODM)Compal
DeviceLaptop
FormatZIP
Size2.5 MB
AddedNovember 9, 2020
Updated
Original file nameLenovo B50-45 ZAWBABB LA-B291P.zip

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:
works perfectly

BIOS dump for the Lenovo B50-45 laptop, board number LA-B291P, platform ZAWBABB, produced by Compal and supplied as a ZIP archive of about 2.5 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 writing anything, confirm that the board number and revision on your motherboard match LA-B291P, and save a full backup of the original chip contents so you can restore it if needed.

The catalog also lists 1 schematic, 2 boardview files, and 4 BIOS dumps for board LA-B291P.

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 B50-45 ZAWBABB LA-B291P. 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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