Fixing corrupt lenovo thinkpad P50 bios

[pirih77]

Hello,
I would like to lern how to fix a corrupt lenovo bios myself, so i dont need to ask for help every time

Could someone point me to the tools and any other info used for this.
And i need to know which parts of the original bios are needed and wich can be used from some other working bios.

Things i successfully did so far:
Unlocking
Cleaning ME

At the moment i am working on a P50 with 4 beeps.
If i flash patched bios, the laptops boots, but i cant enter the bios or anything else.

Any help apprechiated.

[peste]

Re: Fixing corrupt lenovo bios

Hello,
I would like to lern how to fix a corrupt lenovo bios myself, so i dont need to ask for help every time

Could someone point me to the tools and any other info used for this.
And i need to know which parts of the original bios are needed and wich can be used from some other working bios.

Things i successfully did so far:
Unlocking
Cleaning ME

At the moment i am working on a P50 with 4 beeps.
If i flash patched bios, the laptops boots, but i cant enter the bios or anything else.

Any help apprechiated.

like this..

https://www.badcaps.net/forum/showthread.php?t=88533

[pirih77]

Re: Fixing corrupt lenovo bios

Cleaning ME was the nfirst thing i tryed.
But even with the cleaned ME i get 4 beeps.

I am sure there is something with bios, because it boots with patched bios (gets stuck at lenovo Logo, or no picture if i try to enter the bios)

P50 4 beeps - TCG-compliant functionality-related problem (might bethe TPM initialization failure)

Any other steps i can take ?

[peste]

Re: Fixing corrupt lenovo bios

Cleaning ME was the nfirst thing i tryed.
But even with the cleaned ME i get 4 beeps.

I am sure there is something with bios, because it boots with patched bios (gets stuck at lenovo Logo, or no picture if i try to enter the bios)

P50 4 beeps - TCG-compliant functionality-related problem (might bethe TPM initialization failure)

Any other steps i can take ?

try..

[pirih77]

Re: Fixing corrupt lenovo thinkpad P50 bios

Hello,
The second (Orig+$0AN1E00+outimage.rar) is working.
The other one is not working.
CAn you tell me what you did, because i would really like to lern to do that myself.
The only diference between yours and mine cleaned ME bios i can see that you useed consumer version of ME.
Why that if in the original it was COR ?
Did you just clean ME ory you did some other MAGIC

Thank you for the help.

[peste]

Re: Fixing corrupt lenovo thinkpad P50 bios

Hello,
The second (Orig+$0AN1E00+outimage.rar) is working.
The other one is not working.
CAn you tell me what you did, because i would really like to lern to do that myself.
The only diference between yours and mine cleaned ME bios i can see that you useed consumer version of ME.
Why that if in the original it was COR ?
Did you just clean ME ory you did some other MAGIC

Thank you for the help.

in the bios that work I also used the update on the site.

[pirih77]

Re: Fixing corrupt lenovo thinkpad P50 bios

Hello,
I am trying to do the same for another dead P50. No sucess so far
If i understand correctly you replaced BIOS Region.bin in FIT with $0AN1E00.fl1 extracted from update on the site.
The problem i have is that BIOS Region.bin is larger than $0AN1E00.fl1. All the info i could find online shows larger FL1 which you than fix in hex editor.
I attached the bios fron the current patient
Any pointers aprechiated.

[peste]

Re: Fixing corrupt lenovo thinkpad P50 bios

Hello,
I am trying to do the same for another dead P50. No sucess so far
If i understand correctly you replaced BIOS Region.bin in FIT with $0AN1E00.fl1 extracted from update on the site.
The problem i have is that BIOS Region.bin is larger than $0AN1E00.fl1. All the info i could find online shows larger FL1 which you than fix in hex editor.
I attached the bios fron the current patient
Any pointers aprechiated.

enter the update in the HxD program, and cut it to the correct dimensions.

[pirih77]

Re: Fixing corrupt lenovo thinkpad P50 bios

In my case the FL1 file was a little smaler than bios region in FIT from original dump.
Can i just change it ? I tryed but still not working

[pirih77]

Re: Fixing corrupt lenovo thinkpad P50 bios

I tryed everythihg, but it is not working. Could someone else meke me a bios with update from the site like the last one. Or i will have to use it for parts