Lenovo Thinkpad Ec Pwd Bypass

[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!!!

[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

[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

[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

[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]

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

[jackx]

hello maxpower i need solution for t14s gen2 mec1503

[Maxpower3]

_

[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]

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

[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

[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

[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

[Usering]

hello maxpower i need solution for t14s gen2 mec1503

REPLACING EC MEC1503

[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.

[Andromedus_81]

Hello

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

S/N 1htx0j

[veridiux]

Hi,
I purchased an X1 Carbon Gen 8 a few years ago, but unfortunately discovered it’s locked with a BIOS password. Will this method work to bypass or reset it?

[Usering]

Hi,
I purchased an X1 Carbon Gen 8 a few years ago, but unfortunately discovered it’s locked with a BIOS password. Will this method work to bypass or reset it?

no solution bypass chips mec1503 , mec1723/24 yes solution Hardware by replacing mec1723 chip

[Usering]

Hello

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

S/N 1htx0j

there is 3 way solutions
solution by patching bios if size 16mb
solution programming EC , by programmer (svod, vertyanov or rt809…)
solution LPC by jumper pon LAD0

[veridiux]

no solution bypass chips mec1503 , mec1723/24 yes solution Hardware by replacing mec1723 chip

Do you happen to know anyone who does this online? I live in a rural area, so not very many repair shops.