Lenovo T480S

[hardware1]

Re: Lenovo 480S

need bios, same model ALL bios tried no display only need help
ET481 NM-B471
REV 1.0
T480s (type 20L7, 20L8) Laptop (ThinkPad) - Type 20L8
SERIAL - PC162477

Here's your New BIOS file, try it and let me know.

[sundarkanini]

Re: Lenovo 480S

Here's your New BIOS file, try it and let me know.

same status any other file or need ec file please

[coelectron]

Lenovo T480s ET481 NM-B471 bios request

Hello friends, pls i need this Bios, mine is corrupted

put the backup. thanks in advance

ET481 NM-B471 Rev 1.0

[coelectron]

Re: Lenovo T480s ET481 NM-B471 bios request

Hello friends, pls i need this Bios, mine is corrupted

put the backup. thanks in advance

ET481 NM-B471 Rev 1.0

can somebody help me? thanks

[HAMZA123]

lenovo t480s
NEED EC BIOS

[SMDFlea]

RULES UPDATE for BIOS requests/offers AVOID BANNING, READ BEFORE POSTING
https://www.badcaps.net/forum/troubl...before-posting

[wayyne]

Thinkpad T480s:
Type: 20L7-001NGE
S/N: PC13XSFF
Motherboard: ET481 NM-B471
Bios Chip: MXL12873F

I have bought the laptop as "broken". When turning the Laptop on it plays a beep melody. "Lenovo PC Diagnostics" App identified the beep melody as: error code 0285 - This error code refers to "TCG-compliant functionality-related error(might be the TPM initialization failure".

As mentioned on this Reddit Thread to get a CH341A and flash the BIOS.

Therefore I have used the CH341A and AsProgrammer 2.0.4. After a few attempts I was able to make 3 identical readings of the Bios Chip.

As this laptop did not have any working bios from the beginning, I would need a .bin from a working dump to flash the bios.

Thank you very much for the assistance in advance.

[Markus1741]

Thinkpad T480s:
Type: 20L7-001NGE
S/N: PC13XSFF
Motherboard: ET481 NM-B471
Bios Chip: MXL12873F

I have bought the laptop as "broken". When turning the Laptop on it plays a beep melody. "Lenovo PC Diagnostics" App identified the beep melody as: error code 0285 - This error code refers to "TCG-compliant functionality-related error(might be the TPM initialization failure".

As mentioned on this Reddit Thread to get a CH341A and flash the BIOS.

Therefore I have used the CH341A and AsProgrammer 2.0.4. After a few attempts I was able to make 3 identical readings of the Bios Chip.

As this laptop did not have any working bios from the beginning, I would need a .bin from a working dump to flash the bios.

Thank you very much for the assistance in advance.

Hello here are two new files. And yes, your original file is corrupt.
Either one should work.
Just be careful with the resistors when programming with a clip.
Otherwise neither works.
Lenovo_T480s_outimage.bin is one from my archives.
Bios_T480s_new_outimage.bin is your with new BIOS region.
Good luck ....

[wayyne]

Hello here are two new files. And yes, your original file is corrupt.
Either one should work.
Just be careful with the resistors when programming with a clip.
Otherwise neither works.
Lenovo_T480s_outimage.bin is one from my archives.
Bios_T480s_new_outimage.bin is your with new BIOS region.
Good luck ....

Hello Markus1741, thank you very much for the fast reply. I used your Bios_T480s_new_outimage.bin and at least it somehow worked. It shows at least the Lenovo Startup logo after that it shows me two errors which you can see at the screenshot below.

When clicking F1 to continue it asks me for a supervisor password? Did your bios dump/image had one? If so, can you forward it to me by any chance?

If not then I will try this method from this Thread:
https://winraid.level1techs.com/t/ne...-bios/38125/15

“A user over at badcaps.net 6, where Sweet Kitten linked the first image from, has build a LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal 95.

So I downloaded that tool and pretty much followed the instructions lined out in the thread using the
unbricked_old.bin that @lfb6 had uploaded. So basically:

1. Run the tool on the unbricked image
2. Flash that image to the chip
3. Boot up and follow instructions ← this gets rid of the supervisor password
4. Flash the original unbricked image to the chip again
5. Factory reset BIOS (which is now accessible without a password!)

It does look a bit shady though, ngl, so I'm not sure yet what to think of it and if it didn't introduce some unwanted guests or something.

But: It did work. After that, the machine did boot normally without any errors or warnings. Bonus: BitLocker was still in place and accepted my old password, so I was able to recover everything and everything is working as if nothing ever happened!”

[Markus1741]

The file Bios_T480s_new_outimage.bin is your original uploaded file that I repaired.
If you don't know that your notebook has a supervisor password, I certainly don't know. But it's also nice that it worked.
Lenovo hasn't stored a password in the BIOS chip for ages but always in the EC chip MECxxx or ITExxx or Nuvotonxxx

[YOUNES MIH]

Hello
Mb : NM-B471 Rev 1.0
Notebook Model : 480S
i need patch my bios please help me

[danito]

Hello
Mb : NM-B471 Rev 1.0
Notebook Model : 480S
i need patch my bios please help me

here

[YOUNES MIH]

here

thank you

[magneh]

Hey guys!

Got his T480 bricked, turns on , no post. seems bios related.

Here's the original backup.

Board: ET481 NM-B471 rev 1.0
Laptop: Lenovo T480s
Type: 20L8-SBT00
SN:PC-12ZMY5

Could someone help me getting my dump fixed?

Thank you!!

[hoaca388]

Hey guys!

Got his T480 bricked, turns on , no post. seems bios related.

Here's the original backup.

Board: ET481 NM-B471 rev 1.0
Laptop: Lenovo T480s
Type: 20L8-SBT00
SN:PC-12ZMY5

Could someone help me getting my dump fixed?

Thank you!!

T480s Laptop (ThinkPad) - Type 20L8 - 20L8SBT00

[magneh]

T480s Laptop (ThinkPad) - Type 20L8 - 20L8SBT00

Thank you hoaca388!

Laptop turn on and POST OK

BUT

touchpad is not working

Could it be related with bios?
It was working before it got bricked.