Lenovo Thinkpad Ec Pwd Bypass

[Andromedus_81]

Hello

Has anyone unlocked the Lenovo X380 Yoga 20lj model? If so, could they suggest which pin they used?

S/N 1htx0j

[leancash]

I really want to thank you, because I was worried about two Thinkpad T480s I bought with a supervisor password, but looking for a solution on the internet, I came here, and after two days reading the threads and watching the videos, I figured it out, and now the two PCs are working perfectly. I did it like in the 5th or 6th try.
Merci beaucoup.

[Usering]

hello maxpower i need solution for t14s gen2 mec1503

REPLACING EC MEC1503

[Usering]

No, not at the moment.
I actually have one on my desk.
It's going to suffer from the exams.

CHANGING CHIP EC MEC1503 , WORKING

[Polar Bear]

Hello,

Could you clarify on information in original post regading Mec1663?

Mec1663 Dmi start from 0x00
Pwd 0x300 - 0x34F replace with FF

Do I understand correctly that you utilized JTAG to remove the password? Can you describe the procedure?

I wonder if FT232H with openOCD can be used for such approach to remove supervisor password.

I luck exprience in this field and looking if inexpencive JTAG adapter can be used in such situation.

A consultation with ChatGPT indicates that perhaps it would not work as only SWD protocol implemented.

Thank you
Polar Bear

[tdelfy]

Hello, I need unlock bios password Lenovo Thinkpad P15v Gen1 S/n PF-2VZK7T Type number 20TQ motherboard is nm-c641
KBC is NPCX897
I reed ec and tried to modify dump but I get these errors and the machine shut down. Please help.

you read NPC897 somehow.please share

[Maxpower3]

The only PC I killed was an X390 when I played around with modifying the Lenovo utility to remove the password.
I replaced 54h with 57h but I made a mistake in my modification.
The EC is corrupt now

repaired, Bios + MEC16

[Maxpower3]

hello maxpower i need solution for t14s gen2 mec1503

No, not at the moment.
I actually have one on my desk.
It's going to suffer from the exams.

[Maxpower3]

_

[jackx]

hello maxpower i need solution for t14s gen2 mec1503

[Maxpower3]

Hi all, i am trying to unlock BIOS, protected by password of my Lenovo t480, I’ve tried flashing bios chip using CH341A tool with no success, then i came across this post and please correct me if I’m wrong, i am not good at reading schemes , is the pin that i marked in red is the right one?

Yes it's good.
you can use the 4 or 6/8/or 10 with a short shunt with a ground during startup
watch my different videos as an example

[kapiras]

T480 NM-B501
tested ok

Hi all, i am trying to unlock BIOS, protected by password of my Lenovo t480, I’ve tried flashing bios chip using CH341A tool with no success, then i came across this post and please correct me if I’m wrong, i am not good at reading schemes , is the pin that i marked in red is the right one?

[Maxpower3]

Hello

Has anyone unlocked the Lenovo T470 model? If so, could they suggest which pin they used?

Lenovo ThinkPad T470
Type 20jn
S/N pf-0y25az

NM-A931 MEC1653
J5 too 4/6/8 or 10

[Stefan Steff]

Hello

Has anyone unlocked the Lenovo T470 model? If so, could they suggest which pin they used?

Lenovo ThinkPad T470
Type 20jn
S/N pf-0y25az

Unlocking T470 works with Lenovo Autopatcher : https://www.badcaps.net/forum/troubl...oval#post78215

[Andromedus_81]

Hello

Has anyone unlocked the Lenovo T470 model? If so, could they suggest which pin they used?

Lenovo ThinkPad T470
Type 20jn
S/N pf-0y25az

[kicker12]

Hey!
Just to inform/confirm it works on X1 Yoga 4th (board FX490, NM-B861, same as X1 Carbon 7th): shorted J5 (which is located o the side of the battery connector), pin 4-6-8-10 (all connected together).

Took some attempts, lost the serial number trying (not big deal) and, as user 64xgeo reported, a weird message where I had to press Z...

All fine and clean now: thanks MaxPower!!!

[Geromen]

Yes. I did exactly as I explained here. I tried many times before it worked. Now I have a Lenovo ThinkPad T14 laptop that I bought completely new for 100 usd just for the locked BIOS. NOW IS 🔥.

[Geromen]

Hi, Doesn't connect to GND? only short 8 and 10 using clip?

Exactly. Just as I explained. I did many tries and I have a completely functional Lenovo ThinkPad T14 Laptop that I bought for 100 usd as new but BIOS locked. Now is 🔥.

[Saad Haider]

Any solution for T14 gen 2, mec1503 unlock??

[noticeable80]

IT WORKED ON THINKPAD T14 I7-10610U.
The pin order is as follows:

1. Where number 14 is located, that is pin 14. The others in the same line are 12, 10, 8, 6, 4, and 2 (2 is also marked on the motherboard).


2. Where number 13 is located, that is pin 13. The others in the same line are 11, 9, 7, 5, 3, and 1 (1 is also marked on the motherboard).



Procedure:

Use a clip to short pins 8 and 10.

Power on the laptop, hold the short for a moment, then release and press F1.

If the keyboard doesn’t work, use a USB keyboard.

Once inside the BIOS, remove all passwords (leave them blank).

Save the changes and reboot using Ctrl + Alt + Delete.

Hi, Doesn't connect to GND? only short 8 and 10 using clip?