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[REQUEST] Lenovo T520 (8AETxxWW) Whitelist Removal
Hi everyone, newbie here, I have a T520 which was given by a special friend of mine, it is very valuable to me. Now, I had replaced its battery but the T520 refuses to charge it by a beeping sound.

I had searched the internet that there is a whitelist for OEM battery. Is there any bios mod that will remove battery checking or whitelisting? Please help me, thank you very much.
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Answers to previous posts start here:

I can confirm that the file provided by @killer23d is legit, works great and once recompiled as @tazeat suggested the beeps are also gone!

@Marcin I'm using AX200 with BT 5.1 or 5.2 and no issues whatsoever, actually any issues with BT/WiFi I've had before are now gone.

@justwantsomerealwifi All you really need to do is read through this thread, at least several last pages, it's all there, really.

@jake120691 If you're a newbie and this laptop is valuable for you then just buy a legimate battery. Even if there's a way to bypass this, then in case of a battery failure you're risking your laptop going up in flames and taking the surrounding area around it also in flames. Have you seen vapes exploding? 99% of cases they were using el cheapo batteries and trying to pull too much power from them.
Not saying that will happen with a laptop 100% of the times, but I wouldn't risk it anyway, better to spend even those 100$ on the biggest cells original battery than risk your laptop, life and whatever is around it, especially since you're a newbie.


=======================================================================================
Here's my question now:
I've tried to replace the BIOS boot logo, I did abide to all the requirements of not only size, but also resolution, filename and I tried BMP,PNG formats, but each time I tried to do it via the flashing lenovo software provided by killer it did proceed just fine, but the bios boot image still remains black.

Any ideas how to actually replace the BIOS boot logo? That'd be the icing on the cake on my laptop Big Grin
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(03-26-2021, 08:49 PM)olokos Wrote: Answers to previous posts start here:

I can confirm that the file provided by @killer23d is legit, works great and once recompiled as @tazeat suggested the beeps are also gone!

@Marcin I'm using AX200 with BT 5.1 or 5.2 and no issues whatsoever, actually any issues with BT/WiFi I've had before are now gone.

@justwantsomerealwifi All you really need to do is read through this thread, at least several last pages, it's all there, really.

@jake120691 If you're a newbie and this laptop is valuable for you then just buy a legimate battery. Even if there's a way to bypass this, then in case of a battery failure you're risking your laptop going up in flames and taking the surrounding area around it also in flames. Have you seen vapes exploding? 99% of cases they were using el cheapo batteries and trying to pull too much power from them.
Not saying that will happen with a laptop 100% of the times, but I wouldn't risk it anyway, better to spend even those 100$ on the biggest cells original battery than risk your laptop, life and whatever is around it, especially since you're a newbie.


=======================================================================================
Here's my question now:
I've tried to replace the BIOS boot logo, I did abide to all the requirements of not only size, but also resolution, filename and I tried BMP,PNG formats, but each time I tried to do it via the flashing lenovo software provided by killer it did proceed just fine, but the bios boot image still remains black.

Any ideas how to actually replace the BIOS boot logo? That'd be the icing on the cake on my laptop Big Grin

Here You go :

https://www.mediafire.com/file/09ydb7oa5...0.rar/file

This Mod has all and is resigned by ValdikSS python script ...

Regards

By BDMaster
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(03-28-2021, 10:45 PM)GioCap Wrote: Here You go :

https://www.mediafire.com/file/09ydb7oa5...0.rar/file

This Mod has all and is resigned by ValdikSS python script ...

Regards

By BDMaster

I already have the bios uploaded by killer and resigned by myself, is it any different from what you have uploaded?
Could you tell us a bit more about it, if it is in fact different from the killer's one, apart from resigning?

The only thing that was left unresolved for me was the ability to replace the BIOS bootup image by myself, everything else I managed to do by myself, but not replacing bootup image by my own one, despite meeting all the requirements for it.

Do you know how could I replace the image that the PC boots up with with at the bios level my own custom one?
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(03-30-2021, 09:46 AM)olokos Wrote:
(03-28-2021, 10:45 PM)GioCap Wrote: Here You go :

https://www.mediafire.com/file/09ydb7oa5...0.rar/file

This Mod has all and is resigned by ValdikSS python script ...

Regards

By BDMaster

I already have the bios uploaded by killer and resigned by myself, is it any different from what you have uploaded?
Could you tell us a bit more about it, if it is in fact different from the killer's one, apart from resigning?

The only thing that was left unresolved for me was the ability to replace the BIOS bootup image by myself, everything else I managed to do by myself, but not replacing bootup image by my own one, despite meeting all the requirements for it.

Do you know how could I replace the image that the PC boots up with with at the bios level my own custom one?

Hi Olokos,
I think that there isn't much differences between these, but I want to learn anything new from all friends and share the knowledgments of mine with them !
I haven't Lenovo laptop and can't do tests, but I would try to help You to make this goal.
If do You want to talk about that I'll be very happy, as I can ask to an expert own tests and goals.
I would ask about signing form You used to ...

https://github.com/ValdikSS/thinkpad-shahash
https://github.com/thrimbor/thinkpad-uefi-sign
https://www.insanelymac.com/forum/topic/...on-lenovo/

So We can help all others users to self make own bioses Smile

Regards

P.S. I have done many bioses modified boot logo with other manufacturers laptops in the past, but we can learn everyday something new.

Look here :

https://www.bios-mods.com/forum/Thread-A...9#pid73179

And now on Lenovo TP T420 and T520 I found this (into bios modules) :

https://www.mediafire.com/file/yf3aebjfi...o.rar/file

On Lenovo Legion Y520 I found these :

https://www.mediafire.com/file/2ie4kudth...s.rar/file

On Lenovo TP E450 :

https://www.mediafire.com/file/gvv2htoiw...0.rar/file

Regards
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