Lenovo ThinkPad E15 Gen2 NM-C771 need dump

[no1here4u]

Lenovo ThinkPad E15 Gen2

Hi! Could anyone help me with a bricked Thinkpad E15 Gen2 AMD? (Ryzen 5 4500u)
The attached file has been uploaded to this post earlier, and I guess it should work with my laptop model.
The serial number is PF2C8AAJ.

Can't get the bios dump because the previous owner has already tried to write on the Bios without backing it up first... I tried using the attached file with no luck. Laptop starts but I get no picture.

Thanks in advance!

[qayyum786]

Serial Number:- PF2C8AAJ
Try a new one
Extracted from Lenovo support

[SMDFlea]

SN is in the EC as far as i know,only win key in backup, at the end of EVSA region. Copy the win key block after 07 EC 7B 1A 29 A1 C1 F1 91 FD 48 86 6E 3E CE CB .Copy the key including the SDK0J40697 WIN . .You can copy the whole EVSA region if you wanted to 5E0000 ,length 10000

[no1here4u]

Serial Number:- PF2C8AAJ
Try a new one
Extracted from Lenovo support

Hi qayyum786, thanks for your reply!
I'm sorry, I made a mistake with the Serial Number... that was from a working laptop.
The correct SN is PF1B2E1L
Could you help me with this one?

[qayyum786]

no issue. I check both with serial number and both are same
feel free to flash given bios and copy win key from offset given by smdflea

[Dan20701]

Hello all, Is this only possible with vertyanov programmer ?. is there no way to do it with RT809H and the keyboard adapter ?

Thanks for any advice.

[Maxpower3]

Hello all, Is this only possible with vertyanov programmer ?. is there no way to do it with RT809H and the keyboard adapter ?

Thanks for any advice.

https://www.badcaps.net/forum/troubl...ss#post3237235

[vladfxnet]

Hello guys and help out!! Lenovo thinkpad e15 gen 2 (BIOS CHIP gigadevice 25q80csig) when press the power button 3 times it blinks quickly and then constantly blinks for a long time. I think it's a firmware issue. I read the BIOS and was surprised by the file with a size of 1Mb. Here the firmware is 16Mb. When I try to flash it, it says there is not enough space (as i see flash has 10Mb). matherboard GE4B0/GE5B0 NM-D011. CH341A programmer - Neoprogrammer. All fotos can attach if necessary/

[vladfxnet]

BIOS

[Markus1741]

Hello guys and help out!! Lenovo thinkpad e15 gen 2 (BIOS CHIP gigadevice 25q80csig) when press the power button 3 times it blinks quickly and then constantly blinks for a long time. I think it's a firmware issue. I read the BIOS and was surprised by the file with a size of 1Mb. Here the firmware is 16Mb. When I try to flash it, it says there is not enough space (as i see flash has 10Mb). matherboard GE4B0/GE5B0 NM-D011. CH341A programmer - Neoprogrammer. All fotos can attach if necessary/

Hello, why does everyone always want to flash the +3.3V_TBTA_FLASH USB-C PD controller chip, I don't understand it.
The chip is responsible for USB-C and has nothing to do with BIOS, so don't bother with it.
On this model, the BIOS is 33.6 MB (33,554,432 bytes)

[vladfxnet]

Hello, thank you for your answer. I'm not an expert in this area, but... We have a war going on and i can't go out into the street to send it in for repairs, so i have to try it myself. Tell me what this BIOS looks like, and could there be a problem with it? When the board is connected there is still something whistling, but not always.
On this site I downloaded several BIOS files but they are all approximately 16MB

[SMDFlea]

Hello, thank you for your answer. I'm not an expert in this area, but... We have a war going on and i can't go out into the street to send it in for repairs, so i have to try it myself. Tell me what this BIOS looks like, and could there be a problem with it? When the board is connected there is still something whistling, but not always.
On this site I downloaded several BIOS files but they are all approximately 16MB

Please post the laptop serial number. I hope you made a backup of that 1MB chip,as you`ll have to flash it back.As already said,its not the bios. The bios chip will most likely have 25Q256 etched on it

[Markus1741]

You're right, according to the schematic, your BIOS is 16.8 MB (16,777,216 bytes) and should be found under the name UC4 (board number space).
I think there are two options.
1. Your BIOS is defective. Hard to say without BIOS.
2. Or a hardware defect. It can also be.
You should just upload your original BIOS.

[ChrsOvkll]

Hello, why does everyone always want to flash the +3.3V_TBTA_FLASH USB-C PD controller chip, I don't understand it.
The chip is responsible for USB-C and has nothing to do with BIOS, so don't bother with it.
On this model, the BIOS is 33.6 MB (33,554,432 bytes)

Hi, sorry for asking here, I am thinking this is going to be bad news for me, but, what if I Erased/Flashed the PD controller chip, thinking it was bios chip (winbond 25q80dvsig) and the "backup" I have is mostly F's and zeroes and a few hex characters here and there, and when I flash it back (The original file) the motherboard is still dead? is it gone? Is there a way to find or fix the file to flash it back if I read the bios main chip and try to rebuild it from the hex characters? thanks

[Markus1741]

Hi, sorry for asking here, I am thinking this is going to be bad news for me, but, what if I Erased/Flashed the PD controller chip, thinking it was bios chip (winbond 25q80dvsig) and the "backup" I have is mostly F's and zeroes and a few hex characters here and there, and when I flash it back (The original file) the motherboard is still dead? is it gone? Is there a way to find or fix the file to flash it back if I read the bios main chip and try to rebuild it from the hex characters? thanks

[vladfxnet]

Hello, I think I found it. Photo below. But the chip is strange, its legs are very short and you will probably have to solder it. Because I used a clothespin.

[hoaca388]

Hello, I think I found it. Photo below. But the chip is strange, its legs are very short and you will probably have to solder it. Because I used a clothespin.

https://shopee.vn/Tianye-Sop8-W-son-...7-e86cbbfcd89d

[redoxy]

Can someone please help remove Absolute Persistence?

Machine Type: 20T8-005CUS
Serial: PF-39CYL3
Motherboard: GE420/GE520 NM-C771
Laptop: ThinkPad E15 Gen 2

Thanks, in Advance

[volinakis]

Can someone please help remove Absolute Persistence?

Machine Type: 20T8-005CUS
Serial: PF-39CYL3
Motherboard: GE420/GE520 NM-C771
Laptop: ThinkPad E15 Gen 2

Thanks, in Advance

try. after write new bios go in bios setup - security - absolute and permanently disable

[redoxy]

Thanks, volinakis
It worked.
I appreciate it.

Cheers!

[volinakis]

Thanks, volinakis
It worked.
I appreciate it.

Cheers!

you are welcome