need remove password lenovo p52

[SMDFlea]

Re: need remove password lenovo p52

Hello, i have problem with removing bios password from Lenovo P52. I've tried lenovo autopatcher method but after injecting patch just black screen and cpu getting hotter. Can u help me ? Original and patched dumps in attachmetns. Thanks

attachments:

You must post the Serial number

RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*
https://www.badcaps.net/forum/showthread.php?t=103570

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[HoulScreamPL]

Re: need remove password lenovo p52

You must post the Serial number

RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*
https://www.badcaps.net/forum/showthread.php?t=103570

.

Sorry

S/N: PF-1MR2B2 19/03
TYPE: 20M9-0017MX

[volinakis]

Re: need remove password lenovo p52

Any chance for help ?

try this and follow steps described in autopatcher

[HoulScreamPL]

Re: need remove password lenovo p52

try this and follow steps described in autopatcher

Still the same issue, i triple checked your patched file and still dont working.
Just few restarts, black screen, cpu getting hot and beep code. Any other ideas ? I checked laptop still working on original bios file with password without problems.

[volinakis]

Re: need remove password lenovo p52

Still the same issue, i triple checked your patched file and still dont working.
Just few restarts, black screen, cpu getting hot and beep code. Any other ideas ? I checked laptop still working on original bios file with password without problems.

did you push cover switch? did you remove cmos battery? use a charger >130W, otherwise will not boot.

[HoulScreamPL]

Re: need remove password lenovo p52

did you push cover switch? did you remove cmos battery? use a charger >130W, otherwise will not boot.

Cover switch is glued and secured by tape, ssd removed, cmos bat. removed, i use 230W Lenovo rectangle charger, tried on fully charged original battery and laptop behave like on charger, 2 restarts, black screen and beeps

[volinakis]

Re: need remove password lenovo p52

Cover switch is glued and secured by tape, ssd removed, cmos bat. removed, i use 230W Lenovo rectangle charger, tried on fully charged original battery and laptop behave like on charger, 2 restarts, black screen and beeps

try this clean ME patched bios.

[HoulScreamPL]

Re: need remove password lenovo p52

try this clean ME patched bios.

On this bios still the same issue but i saw 4 restarts not 2 like before. I checked beep code and it says:

0285 - TCG-compliant functionality-related error (might be the TPM initialization failure)

[volinakis]

Re: need remove password lenovo p52

read again original bios chipset. I think you read it with errors 1st time.

[HoulScreamPL]

Re: need remove password lenovo p52

read again original bios chipset. I think you read it with errors 1st time.

U mean use original bios, turn on laptop etc. and after that read chip again and try patch it again ??

[osman68i]

ThinkPad P52 NM-B562

for someone who need information
32 mb bios you must read write mec1653. 1 resistor switch 4 jumper wire.

[feherhollo]

ThinkPad P52 NM-B562

for someone who need information
32 mb bios you must read write mec1653. 1 resistor switch 4 jumper wire.

How can you read and write MEC1653? Where is the JTAG ports? I have T580 LTS-2 17812-1 board and cannot find the JTAG to work with the MEC

[SMDFlea]

Off topic.This thread is only for the ThinkPad P52,and the post above yours is for the NM-B562 motherboard

[MConstantin]

Hello 👋🏻
Is there anyone left here that could help me remove a password from BIOS? I've found some .bin files online, didn't help...in addition, I've only located 2 chips on the motherboard one 32MB and another 1MB but in the downloaded bios dumps there were three files 32MB, 1MB and 256Kb... I don't even know where the third Chip is 🤦🏻 I have the 32MB and 1MB bin files I'll compress them ans post here if it's enough. I look forward to an answer and we'll go from there. Thanks

PS Disassembly of a Lenovo ThinkPad P52 is a BIG PAIN IN THE A** 🤣

[mahlon simwnaja]

Good day
Anyone please help Deactivate of Compu trace
LENOVO P52
TYPE : 20MA-S5J800
S/N : PF-1N7ZDF
MOTHERBOARD MODEL : NM-B561

[dejankeke]

hello everyone, I have a lenovo p52 with a bios password, I tried with the autopecher but after starting with patched bios, I heard the melody and there is no picture on the screen.
in attachment i put original and patched bios, please help.

Lenovo P52 cpu i7-8750H
type 20M9-001GMX
SN PF-1F15RS

[SMDFlea]

Post moved to P52 thread.

[volinakis]

hello everyone, I have a lenovo p52 with a bios password, I tried with the autopecher but after starting with patched bios, I heard the melody and there is no picture on the screen.
in attachment i put original and patched bios, please help.

Lenovo P52 cpu i7-8750H
type 20M9-001GMX
SN PF-1F15RS

try this file and follow steps from autopatcher. Use original adapter or >130W

[dejankeke]

try this file and follow steps from autopatcher. Use original adapter or >130W

thank you for your efforts, the result is the same, the melody is heard and there is no image on the screen.

is there any solution?

[Maxpower3]

thank you for your efforts, the result is the same, the melody is heard and there is no image on the screen.

is there any solution?

try chk

[dejankeke]

try chk

I tried, but the laptop starts up and shuts down immediately.


here is my original bios with password

[dejankeke]

try chk

maybe even on this model the pins can be reconnected and the bypass password can be done