Lenovo Thinkpad E15 gen2 GE4B0/GE5B0 NM-D011

[kalilinux25]

Hey it is the
GE4B0/GE5B0
NM-D01

My biggest question right now, is do I have to solder wires onto the contacts by the 'JBIOS' area, and then get those onto my ch341a?

Yes you can try I already confirm the connection they are connected to U2 line, but try if the Programmer can detect it , please remove the batery or any that can power the board to avaoid further damage

[mauradin]

What is the Motherboard Model?

Hey it is the
GE4B0/GE5B0
NM-D01

My biggest question right now, is do I have to solder wires onto the contacts by the 'JBIOS' area, and then get those onto my ch341a?

[kalilinux25]

Hey all,

My E15 Gen 2 stopped charging, and I attempted to troubleshoot. I installed the recommended bios, but it did not resolve the charging issue. I stupidly disabled the built-in-battery as per someone's instructions - however, this bricked my laptop because the AC power won't take, and now the battery is disabled. I attempted a CMOS reset, but I could not get the BIOS to reset to unselect the 'Disable Built-in Battery' option. So I am trying to reprogram my BIOS now.

What is the Motherboard Model?

[struart]

please try

On this BIOS laptop starts but theres no MAC address and Managment Version is blank in BIOS and dont detect NVME DISK.

[peste]

I think so...follow the routes in the picture from post #2....

[mauradin]

Hey all,

My E15 Gen 2 stopped charging, and I attempted to troubleshoot. I installed the recommended bios, but it did not resolve the charging issue. I stupidly disabled the built-in-battery as per someone's instructions - however, this bricked my laptop because the AC power won't take, and now the battery is disabled. I attempted a CMOS reset, but I could not get the BIOS to reset to unselect the 'Disable Built-in Battery' option. So I am trying to reprogram my BIOS now.

On top of that I also wiped the wrong chip... Can someone get me an export of the data for the: 25Q80DVSIG chip?

Additionally, for this laptop, since the BIOS is stored in 25R256JVEN, I don't see a way to desolder this chip, but I do see these contacts. Do I have to temporarily solder wires here to make this work? I'm unsure how to connect to this chip.

My laptop:
Serial: MJ-0G4908
Type: 20TD-S00800

[kalilinux25]

Hello
I have Lenovo E15 Gen 2 NM-D011 Rev 1.0.
Laptop starts, power led is on, nothing on screen and restart after 5-10 seconds.

Laptop data:
Motherboard NM-D011 Rev 1.0
Serial number: PF-3PFE3P
Type Number: 20TD-00GNPB
P/N: SL11B03796

Heres dump from Winbound 25R256JVEQ chip dumped via T48 programmer.

Strange thing is that i cannot verify that chip with dump i made it always shows differencies no matter what programmer i use ch341/ez2013/t48. Chip in adapter no clip used.

please try

[struart]

Hello
I have Lenovo E15 Gen 2 NM-D011 Rev 1.0.
Laptop starts, power led is on, nothing on screen and restart after 5-10 seconds.

Laptop data:
Motherboard NM-D011 Rev 1.0
Serial number: PF-3PFE3P
Type Number: 20TD-00GNPB
P/N: SL11B03796

Heres dump from Winbound 25R256JVEQ chip dumped via T48 programmer.

Strange thing is that i cannot verify that chip with dump i made it always shows differencies no matter what programmer i use ch341/ez2013/t48. Chip in adapter no clip used.

[hoaca388]

model is:lenovo E14
serial is:PF-33A1QT
tyep is:20TA-00DRMY
when turns on it gives display with too loud beep and keep on restarting after cmos error...i attached orignal file

E14 Gen 2 Laptop (ThinkPad) - Type 20TA

[jomerfx28]

Lenovo ThinkPad e15 Gen2
S/N: PF-33JCSV
Board Label: GE4B0/G35B0 NM-D011 Rev 1.0
Type #: 20TD-00B7US

Fresh Bios Please. Thanks

[alihomee]

model is:lenovo E14
serial is:PF-33A1QT
tyep is:20TA-00DRMY
when turns on it gives display with too loud beep and keep on restarting after cmos error...i attached orignal file

[Markus1741]

You are also welcome to watch this YouTube video, I just saw it today.
In the Lenovo ThinkPad E14 E15 Gen 2 model, there seems to be a serious processing error in which the Mosfets initially detach from the circuit board due to heat.
Maybe that will help.
https://www.youtube.com/watch?v=FQM0cDefHi4

[vladfxnet]

Re: Lenovo Thinkpad E15

same problem but i hear whistle on 24256E

Hello, have you solved the problem with the chip whistling? Perhaps we have the same problems with the board. My board starts blinking 3 times as usual and then gives continuous long light signals. The fan does not spin and the keyboard backlight does not turn on. If you solved this problem, tell me how?

[HOSCARLY007]

Greetings with everyone.
I have this problem.
How can I disable Absolute Persistence?

Lenovo E15 Gen 2 GE4B0/GE5B0 NM-D011 Rev. 1.0
MTM: 20TBS7NR00
SN.: PF3X****

Por favor gracias

[kalu]

Thanks I have 2 chips: 25Q80DVSIG and 24256E

Which is the BIOS chip?

this is the 32MB EPROM

how do you put 32mb into 1mb??
with Winrar ?

https://www.badcaps.net/forum/troubl...89#post1695089

[redoxy]

Please help with my BIOS.
Unsure what exactly I need but I am assuming a clean ME.
Any expert here please suggest or point me in the right direction as to what might fix my issue.
The laptop was working fine. I got a notification about a critical BIOS update to prevent a known charging issue.
I updated BIOS using Lenovo update utility after the laptop won't boot.
The power LED turns on for few seconds then off and repeats.
When the power adapter is plugged in I can hear a high-frequency sound similar to what's described in post #9 of this thread.

Machine type: 20TDS00B00
Serial #: MJ0EKCYG
Motherboard: GE4B0/GE5B0 NM-D011

Thanks

[SMDFlea]

Yes, NM-D011, i have a feeling that my BIOS chip is not responding and readable but i also read somewhere that this chip is difficult for supporting programmer software due to extra security features. I am using the CH341a programmer.

Thread merged.Post the chip part number

[robert0934]

Yes, NM-D011, i have a feeling that my BIOS chip is not responding and readable but i also read somewhere that this chip is difficult for supporting programmer software due to extra security features. I am using the CH341a programmer.

[SMDFlea]

What model is the motherboard ? NM-D011

RULES UPDATE for BIOS requests/offers AVOID BANNING, READ BEFORE POSTING
https://www.badcaps.net/forum/troubl...before-posting

You MUST:

• Provide the full machine model number, serial number (or Service tag, SNID) and the board model number (see https://www.badcaps.net/forum/showthread.php?t=88758 ) ,The serial number, make, full model number, motherboard model and revision (except QR codes) must be written/typed at your request as per the rules. Not as a picture, part of the file name and so on.

[robert0934]

Hi, i need a clean bios for :

Lenovo thinkpad E15 gen 2 20TD model

serial number PF-2NABTC

20TD-0028MH

Thanks in advance !