Lenovo Thinkpad T480 BIOS and EEPROM request

[Stefan Steff]

This thread does not seem to be very active anymore but if any knowledgeable person ends up reading this even a simple attempt to point me in the right direction would make me eternally grateful.

At this point I've tried a couple BIOSes posted in this thread and also extracting their bios region, replacing the mac address with the one i backed up before i bricked the computer (using hexedit) and stitching it to the BIOS region of my bios dump but nothing has worked. All i get is a black screen and the powerbutton blinks 3 times when i plug it in, but does not react to presses.

I'm completely out of ideas at this point so if anyone knows a potential fix or if there is further modification needed to the bios before flashing or something like that, Ill try anything at this point.

Wizards of badcaps.net I call upon thee

Did you try this dump ?

[badiycbo]

Hello, I bricked my bios when the spi flasher disconncted mid libreboot install. I've tried multiple bios files from this thread and changing the mac address etc but nothing works, the power button just blinks 3 times when connecting charger, any help with getting a working bios would be much appreciated.
Thinkpad T480 i7-8550u
Board: 20L5-CTO1WW
S/N: PF-1596D1

I lost the original dumps but these are the current ones on the board, let me know if more info is needed.

Thanks in advance

This thread does not seem to be very active anymore but if any knowledgeable person ends up reading this even a simple attempt to point me in the right direction would make me eternally grateful.

At this point I've tried a couple BIOSes posted in this thread and also extracting their bios region, replacing the mac address with the one i backed up before i bricked the computer (using hexedit) and stitching it to the BIOS region of my bios dump but nothing has worked. All i get is a black screen and the powerbutton blinks 3 times when i plug it in, but does not react to presses.

I'm completely out of ideas at this point so if anyone knows a potential fix or if there is further modification needed to the bios before flashing or something like that, Ill try anything at this point.

Wizards of badcaps.net I call upon thee

[Gurmeet yadav]

lenovo t450
serial no is not available on sticker
nm-b501
no display BLACK SCREEN...TURN OFF AFTER 30 SECOND
help

[badiycbo]

Hello, I bricked my bios when the spi flasher disconncted mid libreboot install. I've tried multiple bios files from this thread and changing the mac address etc but nothing works, the power button just blinks 3 times when connecting charger, any help with getting a working bios would be much appreciated.

Thinkpad T480 i7-8550u
Board: 20L5-CTO1WW
S/N: PF-1596D1

I lost the original dumps but these are the current ones on the board, let me know if more info is needed.

Thanks in advance

[Dzony83]

Please try this modded (1 byte diff) bios for autopilot disable...if it's not working then probably you need to rewrite the SIO chip.

It actually works perfectly! Autopilot has been successfully removed.
Thanks for the help! I would be grateful if you could write down exactly what you changed, so I can try to do it myself in the future

I also want to thank SMDFlea for the selfless help! Well done, guys!

[Stefan Steff]

Honestly, I'm a little embarrassed that it didn't occur to me at all But we are still learning, it will get better over time with fewer silly questions
Of course I managed to remove the password when I did the patch... And of course, now I have another problem, which is Autopilot. On a couple of computers, I successfully removed Autopilot by following the instructions from volinakis, but on this one I don't see that Autopilot exists at all, and yet when I install Windows 11, it's still tied to the company. I assume something else needs to be changed, but I don't know what exactly?

Please try this modded (1 byte diff) bios for autopilot disable...if it's not working then probably you need to rewrite the SIO chip.

[SMDFlea]

Honestly, I'm a little embarrassed that it didn't occur to me at all But we are still learning, it will get better over time with fewer silly questions
Of course I managed to remove the password when I did the patch... And of course, now I have another problem, which is Autopilot. On a couple of computers, I successfully removed Autopilot by following the instructions from volinakis, but on this one I don't see that Autopilot exists at all, and yet when I install Windows 11, it's still tied to the company. I assume something else needs to be changed, but I don't know what exactly?

Perhaps volinakis or maxpower3 or someone else can help with that, i`m not sure what to do

[Dzony83]

That bios still needs patching

Honestly, I'm a little embarrassed that it didn't occur to me at all But we are still learning, it will get better over time with fewer silly questions
Of course I managed to remove the password when I did the patch... And of course, now I have another problem, which is Autopilot. On a couple of computers, I successfully removed Autopilot by following the instructions from volinakis, but on this one I don't see that Autopilot exists at all, and yet when I install Windows 11, it's still tied to the company. I assume something else needs to be changed, but I don't know what exactly?

[ktmmotocross]

have anybody dump form U15 with dump from U49?

[SMDFlea]

SMDFlea - Thank you for your help, but when I try that file, the BIOS remains locked.
For example, with the original BIOS, I can skip the login and enter the BIOS (of course, I can't change anything), but with this BIOS, I don't even have that option.

That bios still needs patching

[Dzony83]

Hello,
I have a Lenovo T480 that is locked with an administrator password.
I tried Auto-Patcher, and while it worked perfectly on some computers, on this one, I only get beeping and a black screen. What am I doing wrong?

Lenovo T480
Board: L1HF89T0373
SN: PF1F28LP

SMDFlea - Thank you for your help, but when I try that file, the BIOS remains locked.
For example, with the original BIOS, I can skip the login and enter the BIOS (of course, I can't change anything), but with this BIOS, I don't even have that option.

[hoaca388]

HI IN LENOVO T480 HAS BIOS PASSWORD PLS HELP ME OUT
SN - PF-1MMQ2U
MODEL - T480 LENOVO
PN- SL10R03187

https://www.badcaps.net/forum/troubl...ssword-removal

[SMDFlea]

try a different bios - https://www.badcaps.net/forum/troubl...83#post3686683

[hyper x]

HI IN LENOVO T480 HAS BIOS PASSWORD PLS HELP ME OUT
SN - PF-1MMQ2U
MODEL - T480 LENOVO
PN- SL10R03187

[Dzony83]

Hello,
I have a Lenovo T480 that is locked with an administrator password.
I tried Auto-Patcher, and while it worked perfectly on some computers, on this one, I only get beeping and a black screen. What am I doing wrong?

Lenovo T480
Board: L1HF89T0373
SN: PF1F28LP

[Birdsbeinair]

...and how about this dump?
It had worked on 2-3 other laptops that i fixed...

Sorry for the late reply, I've been busy with some work. YES! This one worked!! 😁 But... Windows installations are as unstable as they were before the botched Bios update, and some Linux distros do install but it takes a lot of effort to make it happen. I believe this motherboard may be broken after all, but in such a weird way that I can't pinpoint exactly how, and sadly we can't refund it anymore. Still, thanks everyone involved for your time and support, I learned a lot from this!

[Stefan Steff]

Hey, thank you for the reply! Unfortunately this Bios didn't work for me, the machine just blinks 3 times when I plug it in but shows no other signs of life. 😞

...and how about this dump?
It had worked on 2-3 other laptops that i fixed...

[Birdsbeinair]

T480 Laptop (ThinkPad) - Type 20L6

Hey, thank you for the reply! Unfortunately this Bios didn't work for me, the machine just blinks 3 times when I plug it in but shows no other signs of life. 😞

[hoaca388]

Hello! My Aliexpress-bought motherboard was very problematic when trying to get any stable Windows installation on it, so I tried updating the bios in case it was the culprit but the process failed miserably and now it just sings Error code 0285. Managed to read the Winbond 25Q128JVSQ chip by desoldering it (otherwise it would crash my CH341A) but I did it under the "25Q128JV" label that AsProgrammer lists, so I wonder if it's a valid bios dump even?
Model: T480
Bios Version(suspected to crash Windows?): N24ET49W (1.24 )
board No: ET480 NM-B501 (2018)
s/n: PF-1JGUWZ 18/12
System Board serial number: L1HF8CC01TT
Machine Type: 20L6-S3PV00
CPU: Intel Core i5-8350U
Requesting a working Bios to recover functionality of the machine, and also so I can confirm the old one crashed Windows or not.

T480 Laptop (ThinkPad) - Type 20L6

[Birdsbeinair]

Hello! My Aliexpress-bought motherboard was very problematic when trying to get any stable Windows installation on it, so I tried updating the bios in case it was the culprit but the process failed miserably and now it just sings Error code 0285. Managed to read the Winbond 25Q128JVSQ chip by desoldering it (otherwise it would crash my CH341A) but I did it under the "25Q128JV" label that AsProgrammer lists, so I wonder if it's a valid bios dump even?

Model: T480
Bios Version(suspected to crash Windows?): N24ET49W (1.24 )
board No: ET480 NM-B501 (2018)
s/n: PF-1JGUWZ 18/12
System Board serial number: L1HF8CC01TT
Machine Type: 20L6-S3PV00
CPU: Intel Core i5-8350U

Requesting a working Bios to recover functionality of the machine, and also so I can confirm the old one crashed Windows or not.