Lenovo Thinkpad Ec Pwd Bypass

[zomi]

I uploaded the schematic and boardview for p15/p17 g2

in the schematics forum,

https://www.badcaps.net/forum/troubl...ptor-blackbird

[Maxpower3]

I uploaded the schematic and boardview for p15/p17 g2

in the schematics forum,

https://www.badcaps.net/forum/troubl...ptor-blackbird

P15 P17 Gen2 NM-D491 NPCX997KA0BX
I have one to do, I will try soon
To try

[Arenz]

try

Unfortunately, it didn't work. I tried both but no success.
I don't know if my "ground" is really good so let me know if I need to change it.

I think the issue is probably the timing because sometimes (2 times on the +50 I did) I got error message (two times different) but the other tries were just normal.
In the video, you have a lenovo startup screen and then you do the magic trick, but me, I don't have the first lenovo "Entering setup" image so I can't refer to that.

I don't know if you have any tips or something else but I'll gladly take it.

[Maxpower3]

I think the issue is probably the timing because sometimes (2 times on the +50 I did) I got error message (two times different)
but the other tries were just normal.

if you have mistakes, it's a good sign. you have to keep trying.
check your pencil, it may be cut in the wire.

maybe
https://www.badcaps.net/forum/troubl...32#post3257932

or try test connector JESPI1 with pin 2/3/4 or 5 with pin 6 Gnd
https://www.badcaps.net/forum/troubl...82#post3274982

[Maxpower3]

In the video, you have a lenovo startup screen and then you do the magic trick, but me, I don't have the first lenovo "Entering setup" image so I can't refer to that.

Is your screen taking too long to display with l'hdmi? Use the original screen on the bench.

[Arenz]

Is your screen taking too long to display with l'hdmi? Use the original screen on the bench.

I think that may be the case honestly. I'll try to do that but the setup is a bit complicated right now lol.

And I'll try tomorrow with the espi 1 too

[zomi]

any ideas where best to do the x1 titanium

schematic and boardview

https://www.badcaps.net/forum/troubl...od-lhr-1-19764

[Maxpower3]

any ideas where best to do the x1 titanium

Mec1503 not work
you can try, but I don't believe it

[Gernet]

Maxpower3, I have ThinkPad P15 Gen 2 with SVP
NM-D491 NPCX997KA0BX
I shorten any pin ESPI_IO0..3 , but after it freez

[CraterM]

Maxpower3, I have ThinkPad P15 Gen 2 with SVP
NM-D491 NPCX997KA0BX
I shorten any pin ESPI_IO0..3 , but after it freez

X997 not work

[Maxpower3]

X997 not work

I tried this morning, didn't work, freeze on P15 NM-C651 NCPX897

[Gernet]

I think the problem is which interface is used LPC or ESPI.
NM-C262 (NPCX897) use LPC - work https://www.badcaps.net/forum/troubl...46#post3274946
NM-C651(NPCX897) use ESPI - dont work , freez https://www.badcaps.net/forum/troubl...69#post3276369

[Maxpower3]

I think the problem is which interface is used LPC or ESPI.
NM-C262 (NPCX897) use LPC - work https://www.badcaps.net/forum/troubl...46#post3274946
NM-C651(NPCX897) use ESPI - dont work , freez https://www.badcaps.net/forum/troubl...69#post3276369

I tested with 1.8v instead of gnd, but continues as normal. no error or freeze

[Gernet]

I tested with 1.8v instead of gnd, but continues as normal. no error or freeze

I don't understand. What board? Where is need =1.8v instead of gnd=
I work with NM-D491 - NPCX997 - ESPI

[zomi]

I believe he is testing injecting 1.8v on
P15 NM-C651 NCPX897
at the espi point.

[zomi]

what would happen if we disable the espi ?

[Maxpower3]

I believe he is testing injecting 1.8v on
P15 NM-C651 NCPX897

exact

what would happen if we disable the espi ?

here?

[Gernet]

what would happen if we disable the espi ?

I haven't tried. Do you think, I should try Disable ESPI. In my NM-D491 , I must add resistor R1310. This is right?

[Gernet]

I have installed resistor R1310 =Disable eSPI= on my NM-D491.
But no initialization - nо image and Fan on max.

Next
I remove R1310 - there is initialization and image.
Maybe on NM-D491 not possible use LPC.

[Gernet]

PCH Tiger Lake dont have LPC? 🤔