T470 bios needed

[hoaca388]

Re: T470 bios needed

Hi everyone,
I have Lenovo T470 after bios update, now still boot up but ME version on bios blank and can't shuts down the laptop properly, when shuts down power button led keep flashing yellow and has to force shuts down it. I tried to update the bios still same issue, can someone please help me fix the corrupted bios? I attached this bios dump file.
Thanks

T470 - Type 20JN

[hoaca388]

Re: T470 bios needed

okey so how i understand when im using that patcher and flash with new bios file its always stuck on lenovo logo . when i flash bios with password then its works without problems . it can be problem in another bios chip ? there is 2 bios chips . first one u15 and another u49 .

[ricka2021]

Re: T470 bios needed

T470 - Type 20JN

Thank you,
I tried it, but now the laptop has power but no video or boot up.

[hoaca388]

Re: T470 bios needed

Thank you,
I tried it, but now the laptop has power but no video or boot up.

Check to see if you have lost any small components around the bios chip (eg capacitors or resistors).

[x16]

Re: T470 bios needed

I have a T470. The Bios is corrupted. It starts, i see logo and then it show the normal screen that there is no system on hard drive.
But when i press F1 to go to bios, the screen is black. I cant go to bios.

Hope you guys can help.

[ravenmx]

Re: T470 bios needed

hello , please help this bk have computrace, any can helpme to remove please. thanks you

[mazoot]

Re: T470 bios needed

hello , please help this bk have computrace, any can helpme to remove please. thanks you

try and give reply

[ravenmx]

Re: T470 bios needed

try and give reply

power on but only stay on entering setup ..... and blocked on lenovo logo.. sr

[ravenmx]

Re: T470 bios needed

try and give reply

how i can patch it sr?

[andresi]

Re: T470 bios needed

hello,
i try to unlock bios with patcher, but now i cant enter bios. its just blank screen when i enter bios. can you help fix my bios ?

[hussaka]

Re: T470 bios needed

Thank you

[Jetro007]

Re: T470 bios needed

I got my t470 20HE corrupted in a bad flash (no boot).
The winbond is a 25Q80JV 8Mb chip, but all I see here is 16Mb files for this bios.

I used Neo programmer and a ch341 to read the bios.

Am i missing something?

is there a way to extract a bin file from a bios update?

[Vesko356]

Re: T470 bios needed

I got my t470 20HE corrupted in a bad flash (no boot).
The winbond is a 25Q80JV 8Mb chip, but all I see here is 16Mb files for this bios.

I used Neo programmer and a ch341 to read the bios.

Am i missing something?

is there a way to extract a bin file from a bios update?

101.4 KB is far away from a good read. Try again be more careful.
Use NeoProgrammer V2.2.0.10

.

[hardware1]

Re: T470 bios needed

I got my t470 20HE corrupted in a bad flash (no boot).
The winbond is a 25Q80JV 8Mb chip, but all I see here is 16Mb files for this bios.

I used Neo programmer and a ch341 to read the bios.

Am i missing something?

is there a way to extract a bin file from a bios update?

"25Q80JV" size is (1MB/8Mbit/1024KB) and it's a Wrong chip, search for another chip on the Motherboard (Both sides).

[Jetro007]

Re: T470 bios needed

I found an other one ; 25Q128FVSQ
seems to be the right size, but the read freezes (neo 2.2.0.10)

Current programmer: CH341 Black
SPI ID: EF4018
---------------------------------------------------------------------------
Currently selected: W25Q128FV [3.3V] 128 Mbits, 16 Mbytes
---------------------------------------------------------------------------

i'm reading on board, the chip gets detected

[Vesko356]

Re: T470 bios needed

"25Q80JV" size is (1MB/8Mbit/1024KB) and it's a Wrong chip, search for another chip on the Motherboard (Both sides).

25Q80JV is the most famous spi chip around here.
I don't understand why rookies likes him the most, probably because of the number 80 on the marking.

Edit:

I found an other one ; 25Q128FVSQ
seems to be the right size, but the read freezes (neo 2.2.0.10)

Yes it is, that's the right one. Are you using a clip to read the chip?

.

[hardware1]

Re: T470 bios needed

25Q80JV is the most famous spi chip around here.
I don't understand why rookies likes him the most, probably because of the number 80 on the marking.

They probably assume it will be 8MB. Also sometimes it has the same package as the BIOS chip (SOP8/SOIC8).

[Jetro007]

Re: T470 bios needed

25Q80JV is the most famous spi chip around here.
I don't understand why rookies likes him the most, probably because of the number 80 on the marking.

Edit:


Yes it is, that's the right one. Are you using a clip to read the chip?

.

Yep, the full aliexpress package.
Freezes sometimes in the beginning, sometimes halfway.

desolder?

[Vesko356]

Re: T470 bios needed

They probably assume it will be 8MB. Also sometimes it has the same package as the BIOS chip (SOP8/SOIC8).

Yep, I bet that's exactly why.
Maybe it's time to put in my signature - "Do not touch the 25Q80xxxx chip"

Edit:

desolder?

Absolutely.

.

[Jetro007]

Re: T470 bios needed

Yep, I bet that's exactly why.
Maybe it's time to put in my signature - "Do not touch the 25Q80JV chip"

.

it was sitting next to the cmos battery, smiling at me