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[REQUEST] Lenovo Legion Y540 (BHCNxxWW) BIOS Unlock
#11
is this one ok, or do I need something spetial?
https://de.aliexpress.com/item/327162021...web201603_
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#12
-Производитель и модель материнской
платы : Lenovo Legion Y540-17IRH -81Q4004KRK -Bios Версия: BHCN41WW
-Тип BIOS: InsydeH20


-Bios Ссылка:https://drive.google.com/file/d/15YC3A3q...sp=sharing
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#13
Star 
Hello I have a Lenovo Y540-17IRH and I would like to get access to the advanced section of the BIOS. Could you help me unlock it?

Link to BIOS installer: https://download.lenovo.com/consumer/mob...cn42ww.exe
Link to BIOS file: https://ufile.io/jrmberts
Link to extracted BIOS file (using InsydeImageExtractor): https://ufile.io/ng66o4ut

In order to flash the modded BIOS file (that you'll give me), I'll need a SPI-programmer+SOIC8 clip. Do you have a tutorial on how to use one and what to do?

Thank you
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#14
Hi, I have a Legion Y540 i5-9300H + GTX 1650 Model Laptop.

I was able to unlock the Advanced Menu in my BIOS but there is a special OverClocking Menu that looks like this (see image below). It is greyed out on mine. I cannot unlock it.

Here is the Dump File : https://drive.google.com/file/d/1Bcamha9...share_link

Please Unlock the OverClocking Feature


Thanks


Attached Files Thumbnail(s)
   
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#15
(11-10-2022, 12:10 PM)asparkoffire Wrote: Hi, I have a Legion Y540 i5-9300H + GTX 1650 Model Laptop.

I was able to unlock the Advanced Menu in my BIOS but there is a special OverClocking Menu that looks like this (see image below). It is greyed out on mine. I cannot unlock it.

Here is the Dump File : https://drive.google.com/file/d/1Bcamha9...share_link

Please Unlock the OverClocking Feature


Thanks

Hello, can you share your unlock bios?
Thanks
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quote
#16
(05-10-2025, 01:03 PM)Spartacuss Wrote: Hello, can you share your unlock bios?
Thanks
Hi
All mods are personal, need your bios dump
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quote
#17
Hi, please help me to unlock bios for advanced menu. I need to change PL settings and some undervolting.

Model: Legion Legion Y540-15IRH
Specs: i5-9300h/32gb/1660ti
BIOS version: BHCN45WW

Link to original bios update:

https://download.lenovo.com/consumer/mob...cn45ww.exe

Dump, using H2OUVE:

https://drive.google.com/file/d/10f-Kn8R...drive_link

Thank you in advance!
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quote
#18
(06-08-2025, 11:36 AM)vancouverrise1 Wrote: Hi, please help me to unlock bios for advanced menu. I need to change PL settings and some undervolting.

Model: Legion Legion Y540-15IRH
Specs: i5-9300h/32gb/1660ti
BIOS version: BHCN45WW

Link to original bios update:

https://download.lenovo.com/consumer/mob...cn45ww.exe

Dump, using H2OUVE:

Thank you in advance!
Hi
Your mod completed. Check your messages

This mod for this notebook ONLY !!!
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#19
Hi,

I'm the user of a Legion Y540-15IRH with BIOS version BHCN42WW. I already used an CH341A programmer to dump the BIOS that is attached to this post.

Currently I'm at the same situation as $asparkoffire$ was. I already unlocked the advanced settings menu, but I would be really grateful if someone can help me to enable the "Overclocking Feature" at "Overclocking Performance Menu".

Thanks for your Help.

BIOS dump: https://drive.google.com/file/d/1TqL06vn...sp=sharing
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quote


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