Lenovo Thinkpad Ec Pwd Bypass

[Andreasbest]

I mean the model of the EC chip on the motherboard.
You motherboard color must be blue (green is for Intel CPU) so if i'm correct the EC chip should be on the bottom side so you must diassemble it.

[sam2929]

I mean the model of the EC chip on the motherboard.
You motherboard color must be blue (green is for Intel CPU) so if i'm correct the EC chip should be on the bottom side so you must diassemble it.

There is 2 winbond

[Maxpower3]

NM-E441


https://www.badcaps.net/forum/troubl...-0#post3273315

[Andreasbest]

As correctly Max indicated, i's eSPI, no free solution yet.

[ibo]

As correctly Max indicated, i's eSPI, no free solution yet.

Is there a paid solution then?

[Andreasbest]

Is there a paid solution then?

Not sure.

[kicker12]

Hey!
#1 -> thanks a lot for the noce job all of you (and especially Maxpower3) are doing. :-)

I happened to have a Thinkpad E590 which is BIOS locked.locked. Laptop have IT8227-256 chip...

Question:

1: can you please xonfirm this method works?
2- if so, can you please confirm I need to short eithernpinn7 or 8 or 9 or 10nof that chip? From a first overlook they do not seem to be connected but, maybe, there is a via on the board. Also these pins shall go to an EC and TPM debug port but I cannot find that port...

Any help is warmly welcome!

Thanks!

[Maxpower3]

Hey!
#1 -> thanks a lot for the noce job all of you (and especially Maxpower3) are doing. :-)

I happened to have a Thinkpad E590 which is BIOS locked.locked. Laptop have IT8227-256 chip...

Question:

1: can you please xonfirm this method works?
2- if so, can you please confirm I need to short eithernpinn7 or 8 or 9 or 10nof that chip? From a first overlook they do not seem to be connected but, maybe, there is a via on the board. Also these pins shall go to an EC and TPM debug port but I cannot find that port...

Any help is warmly welcome!

Thanks!

https://www.badcaps.net/forum/troubl...14#post3238014

link not work
not tested, try
yes 7/8/9/10

if you have the bios provide it for test with the serial number of the laptop.
Not sure it works ITE

https://www.badcaps.net/forum/troubl...55#post3312755

[kicker12]

Zuper!!!
Can confirm that worked: took a few attempts but it is now free as a bird!

Thanks MaxPower!!! :-)))

https://www.badcaps.net/forum/troubl...14#post3238014

link not work
not tested, try
yes 7/8/9/10

if you have the bios provide it for test with the serial number of the laptop.
Not sure it works ITE

https://www.badcaps.net/forum/troubl...55#post3312755

[Maxpower3]

Zuper!!!
Can confirm that worked: took a few attempts but it is now free as a bird!

good news, thanks for feedback

[Noldo Fëanor]

Hello everyone.

Here is the bypass solution for several Lenovo ECs.
This has worked on many ECs.
Only works if password is contained in EC

I succeeded on many models
https://www.badcaps.net/forum/troubl...86#post3217086
https://www.youtube.com/channel/UCeF...t_adKcguvynjeA

I shorten the LPC bus, with the LAD0:3 and Gnd.

you can use the dedicated ports where you connect directly to the track.
(Be careful, resistors may be missing on the path)
look at the diagrams

Hello Max, thx for your hard work. when you say "watch videos to understand" to what videos are u refering to? im new at this and i want to learn how to do this.
Again thanks a lot for the info u provided us.

[Maxpower3]

Hello Max, thx for your hard work. when you say "watch videos to understand" to what videos are u refering to? im new at this and i want to learn how to do this.
Again thanks a lot for the info u provided us.

I succeeded on many models
https://www.youtube.com/channel/UCeF...t_adKcguvynjeA

[lint4u]

Hello Max

NM-C881 test point pls
X1 yoga Gen 5

thank you

[Andreasbest]

Hello Max

NM-C881 test point pls
X1 yoga Gen 5

thank you

You must find schematics for NM-C881 first.

[lint4u]

Hello there

no schematic available
do you have it sir ?

[Andreasbest]

If i had it would already uploaded.
Try google.

[adamgouadma]

Hello guys I have a LENOVO P73 There I need a way to remove the password
Plate Number FP730 NM-a272
rev ; 1.0
TY 20QS-S02L00
SN 1YZ49P

[Andreasbest]

Hello guys I have a LENOVO P73 There I need a way to remove the password
Plate Number FP730 NM-a272
rev ; 1.0
TY 20QS-S02L00
SN 1YZ49P

Schematics: https://www.badcaps.net/filedata/fetch?id=1973909
Page 44

[adamgouadma]

Schematics: https://www.badcaps.net/filedata/fetch?id=1973909
Page 44

I will try and let you know the results

[kordex35]

Hello
I have a question, has anyone tried the Lenovo L480 method?
Please provide a diagram of the point-to-ground connection
Best regards