Lenovo Thinkpad Ec Pwd Bypass

[Markus1741]

Hello Maxpower3, we all can't thank you enough for sharing this unlocking method with us.
I could use it to unlock a Lenovo T14s Gen2 AMD built in February 2022, otherwise it would be electronic waste.
Especially since you’re making it all available for free.
Chapeau! Chapeau!

[black0hackers]

P1 g2
LPM-2 MB 18809-2 448 0GU06 0021
WITH NPCX897KA0BX
i try with pin 2 and 10 but not done.have other LPC2 but no have boarview

some one try on this model?

[khaledmosa99]

NM-E091 T14S pin please

[Staszek Kiepszczak]

try one wire (lad0-3) with Gnd
wait for the backlight,before logo.wait 1-2 sec with contact ,release and press f1 to enter setup
errors can occur
EC can be corrupted if you save wrong info

Clear supervisor password with twice blank
and manager with twice blank password
Clear security chip too
After just Ctrl alt del and try
if Mec need many tries

Hi i've had a question, should i connect lad 0-3 all together with one cable to gnd or each one separately? or maybe how to use button method? can you do me a favor and draw me a mor beginner schematic?

Best regards, Staszek

[EGUG]

@204: You only have to connect one of lad's to gnd.

[kniruam]

Hello, I tried to do the bypass, the first time the screen froze, the second time the fan rotated quickly and the third time it only turned on the ESC key F1 and F4 flashing and restarted every 50 seconds. What could I do to get her out of that state?

Thanks in advance

The motherboard is NM - E972 Rev: 1. 0

My laptop is a t14 gen 4 with MEC1723-cbo chip

What I did was touch the -ESPI_RESET with GND for 1 second

[Oliver111]

Hello, sir. Its possible to unlock T14S Gen 2 / X13 gen 3 mec1723? I attached boardview and schematic. Thank you.

MOD EDIT: Link to schematic/boardview -> https://www.badcaps.net/forum/troubl...atic-boardview

[azanwaqas771]

Hello, sir. Its possible to unlock T14S Gen 2 / X13 gen 3 mec1723? I attached boardview and schematic. Thank you.

MOD EDIT: Link to schematic/boardview -> https://www.badcaps.net/forum/troubl...atic-boardview

no

[Oliver111]

no

Thanks for quick response.

[didouche1200]

hello i have thinkpad l13 g 3 motherboard lfr-1 213037 locked bios any solution please

[danito]

hello i have thinkpad l13 g 3 motherboard lfr-1 213037 locked bios any solution please

what MEC?

[Maxpower3]

Hello Maxpower3, we all can't thank you enough for sharing this unlocking method with us.
I could use it to unlock a Lenovo T14s Gen2 AMD built in February 2022, otherwise it would be electronic waste.
Especially since you’re making it all available for free.
Chapeau! Chapeau!

Thank you, away at the moment,
I'm changing residence and work, I'll be back soon.

[didouche1200]

NPCX997KA

[anhbanxoi]

NPCX997KA

Possible but need to try a lot of times.

[didouche1200]

PLEASE HOW

[azanwaqas771]

Possible but need to try a lot of times.

which one pin short but every time he freez on logo

[didouche1200]

LPC BUS OR ESPI BUT SHEMATIC NOT available

[Andreasbest]

Great work as usual.
So for T480s IF i understand correctly you short any of the LPC_ADx to the GND during post like we did on T420, T430 etc?
Is that correct?

btw i have many T480s and i can do as much test you want in case you need help

[danito]

Great work as usual.
So for T480s IF i understand correctly you short any of the LPC_ADx to the GND during post like we did on T420, T430 etc?
Is that correct?

btw i have many T480s and i can do as much test you want in case you need help

it went with pin 6 for me

[Andreasbest]

Over 1 hour of testing on T480s and i get Thermal Sensing Error.
Got other errors like EAIA data access error and Machine UUID is invalid but this the most common.
Machine power off when this occurs.
Keep trying.