Lenovo Thinkpad Ec Pwd Bypass

[Maxpower3]

T14 Gen2 Amd NM-D451 IT5679VG
Tested ok

[kitor]

As written in another thread, L14 G2 AMD, NM-D391 + NPCE68B works fine

[miansh621]

[khaledmosa99]

pleas give me an advice for thinkpad p53

[Maxpower3]

T480 NM-B501
tested ok

[mazoot]

on IT8227E 256EC dump the password area between 0x3EF00--0x3EF40

[ibo]

HI
I have a Thinkpad T15 Gen2 with mec1503. i can try to unlock if the pin is known to short.
NM-D352 Board

[Vesko356]

Read post #1:

...but my tests failed with the Mec1503
The LPC bus is no longer used, it has been replaced by eSPI

[imranromi]

pleas give me an advice for thinkpad p53

Send board code will share you point i believe can unlock P53.

[khaledmosa99]

Send board code will share you point i believe can unlock P53.

nm-c262 thank you sair

[danito]

nm-c262 thank you sair

Try

[aamisterdownload]

Where can I buy a cable with one end USB type B and the other end a pen/stift?
For shorting are you holding the pin on GND already when starting up the laptop and then releasing it at a certain moment while keep pressing F1. It is not clear to me when exactly releasing the pen?
I suppose it doesn't matter to use GND1 or GND2?

[Maxpower3]

Where can I buy a cable with one end USB type B and the other end a pen/stift?
For shorting are you holding the pin on GND already when starting up the laptop and then releasing it at a certain moment while keep pressing F1. It is not clear to me when exactly releasing the pen?
I suppose it doesn't matter to use GND1 or GND2?

Do it yourself

wait 1-2 seconds after turning on or wait for the backlight.
make the contact, wait 1or2 sec, release.and,press f1

Sometimes you may get a fan error which turns off the PC, sometimes you can bypass it by pressing Esc.
other error may occur bad data /uuid /serial etc..this is good sign
just the timming doesn't is not good

The method depends on the Ec (timings are different), it takes several attempts before you succeed and understand.

[noregret70]

Great Job man . But MEc1633 its realy pain , i catch it on 14 try ... at least not brick MB.

[Maxpower3]

Great Job man . But MEc1633 its realy pain , i catch it on 14 try ... at least not brick MB.

for Mec, you have to start early, they are harder

[danito]

for Mec, you have to start early, they are harder

yes, very hard to catch him

[aamisterdownload]

For making the cable yourself. I do not known what to do.
Can I take for example the following piece and just take the red cable of it and connect the red wire (+5V) to a probe? And cutting off the 3 other cables?


Links:
https://shorturl.at/vAFI9

For connecting the red cable to a probe do something like in the following video?
How to make the best DIY back probes in 2 minutes.

[SMDFlea]

For making the cable yourself. I do not known what to do.
Can I take for example the following piece and just take the red cable of it and connect the red wire (+5V) to a probe? And cutting off the 3 other cables?

Links:
https://shorturl.at/vAFI9

For connecting the red cable to a probe do something like in the following video?
How to make the best DIY back probes in 2 minutes.

Thats overkill, you can just use a piece of wire or even tweazers

[Patrik Vilja]

When looking at Espi and lpc, the big difference Was the voltage.. 3.3 for lpc and 1.8 for espi..

So feeding 5v might be the only issue regarding mec1500 and 1700(i have 1722..)

So, update tomorrow with 1.8v feed..


Sleep now..

[Patrik Vilja]

Could someone help point out lenovo thinkpad x1 yoga gen7?

[Patrik Vilja]