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30 Posts

12-06-2017

Greece

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Re: DO NOT UPDATE BIOS 4KCN43WW ON LEGION Y520

2018-05-14, 13:01 PM

Oh cheers, didn't know about that, but googling around showed me there was a driver or something...

 

But no, with the latest FW my CPU doesn't stay high. Only game I play these days is the Talos Principle, at full specs, heat and noise seem to be the same as always.

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157 Posts

06-02-2017

Germany

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Re: DO NOT UPDATE BIOS 4KCN43WW ON LEGION Y520

2018-05-14, 14:14 PM

Don´t know what exactly the problem is but it seems you are all on I7 7700HQ?? 

 

I have the I5 7300HQ and as i said the 43ww Bios and everything is up to date. I dont have any problems with that.

 

Works perfectly for me in all games with best performance what gtx 1050ti can handle. No lags at all.

My temp is now between 80 and 85C°.

With all other Versions of Bios my Y520 does not go over 80C° .

I Y520ikbn 7300HQ I GTX 1050 Ti 2GB I 16GB RAM I SSD´s I
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30 Posts

12-06-2017

Greece

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Re: DO NOT UPDATE BIOS 4KCN43WW ON LEGION Y520

2018-05-14, 14:46 PM
7700HQ here, no problems whatsoever.
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3 Posts

05-17-2018

Russian Federation

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  • Message 34 of 99

Re: DO NOT UPDATE BIOS 4KCN43WW ON LEGION Y520

2018-05-18, 8:20 AM

Thanks/ its very help Smileyhappy:
P.S. Downgrade 4KCN43WW to 4KCN40WW

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10218 Posts

09-04-2014

Slovakia

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Re: DO NOT UPDATE BIOS 4KCN43WW ON LEGION Y520

2018-05-18, 8:14 AM
 

Andy

 

English Community Administrator
Lenovo eServices

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367 Posts

01-23-2009

Finland

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Re: DO NOT UPDATE BIOS 4KCN43WW ON LEGION Y520

2018-05-24, 8:08 AM

This thread contains user submitted links to at least one packaged BIOS update for the Y520. 

 

However, please note that THE DIGITAL SIGNATURE for the update file has been removed. Do not try to download and install BIOS updates from this thread that are uploaded by users, because their original/content cannot be verified. You have no idea what you are really installing! Files without digital signatures cannot be verified as coming from Lenovo!
(they might contain the real BIOS update, and they might work ok, but the problem is you cannot verify this fact, and you cannot know if the package has been altered in any way - like adding malware, etc)

 

When running these, Windows will tell you who the publisher is. If the publisher is unknown or is not Lenovo, you should not run these files. Make sure it says: Verified published: Lenovo. You can also right click on the file, select properties and verify a digital signature is present. See attached image.

 

Here are links to official versions from Lenovo, with digital signature. These links point to Lenovo servers, are HTTPS and after download you can verify the digital signature in them.

 

These versions were mentioned in this thread I think.

Version 4KCN43WW (latest version):
https://download.lenovo.com/consumer/mobiles/4kcn43ww.exe

 

Version 4KCN40WW:
https://download.lenovo.com/consumer/mobiles/4kcn40ww.exe

 

Version 4KCN30WW:

https://download.lenovo.com/consumer/mobiles/4kcn30ww.exe

 

Lenard | (I am a Lenovo INsider - a volunteer and not a Lenovo employee) | @lenardg
ThinkPad P15 Gen1 | YOGA C630 WOS
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126 Posts

09-03-2017

India

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Re: DO NOT UPDATE BIOS 4KCN43WW ON LEGION Y520

2018-05-24, 8:19 AM

 wrote:

This thread contains user submitted links to at least one packaged BIOS update for the Y520. 

 

However, please note that THE DIGITAL SIGNATURE for the update file has been removed. Do not try to download and install BIOS updates from this thread that are uploaded by users, because their original/content cannot be verified. You have no idea what you are really installing! Files without digital signatures cannot be verified as coming from Lenovo!
(they might contain the real BIOS update, and they might work ok, but the problem is you cannot verify this fact, and you cannot know if the package has been altered in any way - like adding malware, etc)

 

When running these, Windows will tell you who the publisher is. If the publisher is unknown or is not Lenovo, you should not run these files.

 

Here are links to official versions from Lenovo, with digital signature. These links point to Lenovo servers, are HTTPS and after download you can verify the digital signature in them.

 

These versions were mentioned in this thread I think.

Version 4KCN43WW (latest version):
https://download.lenovo.com/consumer/mobiles/4kcn43ww.exe

 

Version 4KCN40WW:
https://download.lenovo.com/consumer/mobiles/4kcn40ww.exe

 

Version 4KCN30WW:

https://download.lenovo.com/consumer/mobiles/4kcn30ww.exe

 


Finally... someone cares about what is the right way to do things. (As far as downgrading is concern) also +1 to Lenovo because they actually officially allow BIOS downgrade.

 

Now downgrading is not the final solution, the problem has to be identified by Lenovo and fixed in future update. Hopefully they have already noticed the issue. Now we need to wait for fix.

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448 Posts

02-01-2018

Lebanon

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  • Message 38 of 99

Re: DO NOT UPDATE BIOS 4KCN43WW ON LEGION Y520

2018-05-24, 15:28 PM

 wrote:

This thread contains user submitted links to at least one packaged BIOS update for the Y520. 

 

However, please note that THE DIGITAL SIGNATURE for the update file has been removed. Do not try to download and install BIOS updates from this thread that are uploaded by users, because their original/content cannot be verified. You have no idea what you are really installing! Files without digital signatures cannot be verified as coming from Lenovo!
(they might contain the real BIOS update, and they might work ok, but the problem is you cannot verify this fact, and you cannot know if the package has been altered in any way - like adding malware, etc)

 

When running these, Windows will tell you who the publisher is. If the publisher is unknown or is not Lenovo, you should not run these files. Make sure it says: Verified published: Lenovo. You can also right click on the file, select properties and verify a digital signature is present. See attached image.

 

Here are links to official versions from Lenovo, with digital signature. These links point to Lenovo servers, are HTTPS and after download you can verify the digital signature in them.

 

These versions were mentioned in this thread I think.

Version 4KCN43WW (latest version):
https://download.lenovo.com/consumer/mobiles/4kcn43ww.exe

 

Version 4KCN40WW:
https://download.lenovo.com/consumer/mobiles/4kcn40ww.exe

 

Version 4KCN30WW:

https://download.lenovo.com/consumer/mobiles/4kcn30ww.exe

 


 

you can't be serious ..
most users posted real trusted links, and users who uploaded the file, like me, have no intentions to harm people .. so please stop this attitude

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367 Posts

01-23-2009

Finland

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  • Message 39 of 99

Re: DO NOT UPDATE BIOS 4KCN43WW ON LEGION Y520

2018-05-24, 15:42 PM

I did not say you or the other uploade wanted harm. But good intentions are not enough. Posting files that are not the originals are suspicious and wrong. Posting a modified file or packing it yourself is not ok. Digital signstures are there for a reason.

 

Post links to the official files, there is nothing wrong with that.

Lenard | (I am a Lenovo INsider - a volunteer and not a Lenovo employee) | @lenardg
ThinkPad P15 Gen1 | YOGA C630 WOS
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448 Posts

02-01-2018

Lebanon

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  • Message 40 of 99

Re: DO NOT UPDATE BIOS 4KCN43WW ON LEGION Y520

2018-05-24, 16:01 PM
and how did you know sherlock "Posting files that are not the originals are suspicious and wrong. Posting a modified file or packing it yourself is not ok" ??

did you scan/check the files yourself ?
do you know how to modify the BIOS file ?
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