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BIOS LATITUDE 3420 LATITUDE 3520 cyborg L 15 TGL 213277-1

Hello,
I have Dell Latitude 3520 and I flashed unlocked bios, now there is no power, led goes orange when I clic power button.
I flashed the original bios back, but same thing, no power.
The original and unlocked bios are attached.

[Edit]
I noticed that the files I attached are exactly the same ! I messed up unlock I think.
By the way, the dump was extracted from the WSON8 Aj2128 chip. Service tag is provided (see attached pictures).

Can you help me please ?
Regards,
 

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IMG_20260310_145244.jpg IMG_20260311_000015.jpg
original_latitude_3520.bin
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unlocked_latitude_3520.bin
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Last edited:
mskdk said:
Hello,
I have Dell Latitude 3520 and I flashed unlocked bios, now there is no power, led goes orange when I clic power button.
I flashed the original bios back, but same thing, no power.
The original and unlocked bios are attached.

[Edit]
I noticed that the files I attached are exactly the same ! I messed up unlock I think.
By the way, the dump was extracted from the WSON8 Aj2128 chip (see attached picture).

Can you help me please ?
Regards,
Click to expand...
so check the hardware i think you did something wrong when backing up the bios
 
ThienBui said:
so check the hardware i think you did something wrong when backing up the bios
Click to expand...
Hello,
Thank you for your answer.
I presume that my bios backup is bad then.
I did not make another backup because the Neoprogrammer software indicated reading success.
Is there anyway to flash a fresh bios on my machine ? From an official dell bios update file for example?
 
bios này build xong máy lên xanh đỏ trắng ad ạ, nạp thử bios trên trang đầu cũng xanh đỏ trắng vàng a ạ
 
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