Lenovo Thinkpad L15 gen 1 Bios Request

[Hachem25]

I HAVE THINKPAD L15 GEN 1. SN:TP00121A. IT BEEPS ON SRATARTUP AND DSPLAYS NOTHING. IF YOU CAN HELP ME

[Buffalotoast]

There are password chunks left after the usual location


I think it's good today, I understood




edit try file 2 , 1 must not work

Hi, trying to erase the supervisor password on a ThinkPad L15 gen 1 as well.

I found the three areas (3C420-3C45F, 3D420-3D45F, 3CC20-3CC3F), which contained the password or part of it. I cleared with with 00 or FF and still get "SVP error" on boot. Can you share your knowledge from the last post please? I dont seem to understand.

[Maxpower3]

Hi, trying to erase the supervisor password on a ThinkPad L15 gen 1 as well.

I found the three areas (3C420-3C45F, 3D420-3D45F, 3CC20-3CC3F), which contained the password or part of it. I cleared with with 00 or FF and still get "SVP error" on boot. Can you share your knowledge from the last post please? I dont seem to understand.

post your dump

[Buffalotoast]

Ah, sorry. I figured I could have done that right away. I compared the files and it seems, I dont have the list in the 3D620 range. Also, I should mention, I tried your "shorting method" without success before. Dont know if that might have corrupted some data.

SN PF-1VEWD0
TN 20U4-S09200

Your "try2.bin" did not work. Did not boot. Possible due to bad SN

[Maxpower3]

try this
It's late at my place, not much time. I'll see tomorrow otherwise

[Buffalotoast]

try this
It's late at my place, not much time. I'll see tomorrow otherwise

Thank you for the effort. Sadly I forgot to disconnect bios battery and flashing went wrong. Seems like I bricked the EC firmware. Laptop doesnt start anymore and EC is not detected by SVOD4. I will have to buy a new chip probably or try an out of chassis adapter. I tried to reset the board (no charger, no battery etc)

Edit: I am sorry for the confusion. I am fairly new to working with EC firmware. Without a battery plugged while trying to connect, the EC was recognized again. For me that is odd as the NPCE68APA was only working with SVOD4 with battery connected. I was able to flash your data succesfully now, but I still got "bad SVP data".

[Buffalotoast]

try this
It's late at my place, not much time. I'll see tomorrow otherwise

I reviewed your file and saw that I made an error before and erased too little. Thank you for correcting my mistake!

Bit of back story: laptop had "bottom cover tempered" error before playing with EC firmware. Do you think that is still in firmware hidden? And maybe is our problem?

Also I saw you provided a lot of files for other guys in this topic. It was nice to follow your process of thought on these. Did you ever get feedback from ppl that a removed pw section in EC firmware succesfully cleared the supervisor pw?

[Maxpower3]

I reviewed your file and saw that I made an error before and erased too little. Thank you for correcting my mistake!

Bit of back story: laptop had "bottom cover tempered" error before playing with EC firmware. Do you think that is still in firmware hidden? And maybe is our problem?

Also I saw you provided a lot of files for other guys in this topic. It was nice to follow your process of thought on these. Did you ever get feedback from ppl that a removed pw section in EC firmware succesfully cleared the supervisor pw?

search in the L14 subjects, I think it worked once.
This EC model is complicated and no one tries to clean it except me.
Shame.
I don't have time today but I'll try again if you want

Also, I should mention, I tried your "shorting method"

NM-C741 NCPE68AP??

However, I managed to get this model on YouTube

[Buffalotoast]

search in the L14 subjects, I think it worked once.
This EC model is complicated and no one tries to clean it except me.
Shame.
I don't have time today but I'll try again if you want



NM-C741 NCPE68AP??

However, I managed to get this model on YouTube

Hey, sorry for delay. I would appreciate if you tried the pw removal again. I dont see a point on what to change in the file again.

Do you have experience with flashing a 'clean' EC file from a different SN laptop? Found clean EC file for a L14 i5 10th gen

Model# NM-C631 with NPCE68APA

I wasnt able to get it to boot with shorting. Always been stuck on logo.

[Buffalotoast]

Do not want to spam, but more to share my findings.

Booting with your cleaned EC resulted in a different EC file. I read it again and it seems that the EC is alter in one of the pw spots

I tested the L14_clean_EC.bin and was able to boot, but "system configuration is invalid" is showing up everytime. I will try to rebuild my original file with the L14 one and give it a try.

[Maxpower3]

I tested the L14_clean_EC.bin and was able to boot, but "system configuration is invalid" is showing up everytime.

https://www.badcaps.net/forum/troubl...92#post3537692

[Commannn10]

UEFI BIOS CAN'T CHANGE, SECURE BOOT ENABLE, i want to disable it, PASSWORD BIOS : 12345 (I put it because I thought that at that moment it would unlock my secure boot option)

SERIAL NUMBER : PF-3CYP2T

TYPE NUMBER : 20U4-S2QH00

if you can help me. thank you very much

[hoaca388]

UEFI BIOS CAN'T CHANGE, SECURE BOOT ENABLE, i want to disable it, PASSWORD BIOS : 12345 (I put it because I thought that at that moment it would unlock my secure boot option)

SERIAL NUMBER : PF-3CYP2T

TYPE NUMBER : 20U4-S2QH00

if you can help me. thank you very much

Try

[Maxpower3]

UEFI BIOS CAN'T CHANGE, SECURE BOOT ENABLE, i want to disable it, PASSWORD BIOS : 12345 (I put it because I thought that at that moment it would unlock my secure boot option)

SERIAL NUMBER : PF-3CYP2T

TYPE NUMBER : 20U4-S2QH00

if you can help me. thank you very much

maybe look for Kernel DMA if for change to UEFI/legacy boot settings

[alito666]

hi folks this have ssd not detect can fix the bios file plz ?
Thinkpad L15
GL4A0 GL5A0 NM-C631
SN: PF-2KQ86B

[hoaca388]

hi folks this have ssd not detect can fix the bios file plz ?
Thinkpad L15
GL4A0 GL5A0 NM-C631
SN: PF-2KQ86B

L15 Laptop (ThinkPad) - Type 20U4

[alito666]

L15 Laptop (ThinkPad) - Type 20U4

thanks with this bios only led red , dont turn on i reprogram the original and video dispolay is ok
maybe can check it

[hoaca388]

thanks with this bios only led red , dont turn on i reprogram the original and video dispolay is ok
maybe can check it

Rechecked