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Xiaomi Redmibook 14 II A5 A21 MB REV D NB2500 PCB MB V4 RYZEN 7 4700U BIOS

BIOS Added: Oct 10, 2024 7Z · 4.8 MB

File details

TypeBIOS
BrandXiaomi
RevisionD
DeviceLaptop
Format7Z
Size4.8 MB
Markstested by uploader
AddedOctober 10, 2024
Updated
Original file nameRedmibook_14_II_A5_A21_MB_REV_D_NB2500_PCB_MB_V4_RYZEN_7_4700U_WORKING.7z

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:
Redmibook 14 II A5 A21 MB REV D NB2500_PCB_MB_V4 RYZEN 7 4700U WORKING BIOS 100%

BIOS dump for a Xiaomi laptop, file Redmibook_14_II_A5_A21_MB_REV_D_NB2500_PCB_MB_V4_RYZEN_7_4700U_WORKING.7z, around 4.8 MB in 7Z format. The uploader marks it as tested, and the file name points to motherboard revision D, board NB2500_PCB_MB_V4, for the Redmibook 14 II A5/A21 with a Ryzen 7 4700U. Technicians use a BIOS dump like this to reprogram the SPI flash chip with a programmer after a corrupted BIOS or a failed update.

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: Xiaomi Redmibook 14 II A5 A21 MB REV D NB2500 PCB MB V4 RYZEN 7 4700U. 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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