T470 bios needed

[valerix9898]

Re: T470 bios needed

THANKS. but i have one stupid question . mine bios file is 16mb but those have 8 mb . why?

[hoaca388]

Re: T470 bios needed

THANKS. but i have one stupid question . mine bios file is 16mb but those have 8 mb . why?

Which file do you mean? Each model has a different bios file, some 8MB, some 12MB, 16MB, 24MB, 32MB, 64MB...

[valerix9898]

Re: T470 bios needed

i just checked everywhere and find 8mb bios files . i have 16mb . i know so would be great if you would help to unlock it . tried that patch and its not working for me on my laptop idk why

[Markus1741]

Re: T470 bios needed

i just checked everywhere and find 8mb bios files . i have 16mb . i know so would be great if you would help to unlock it . tried that patch and its not working for me on my laptop idk why

Try your own file ...

[valerix9898]

Re: T470 bios needed

now laptop only spin fan for sec and wont boot .thats all

[valerix9898]

Re: T470 bios needed

Try your own file ...

Strange thing i tried to flash that bios what you corrected for me . It didn't work , laptop was spin fan for one sec and thats all . No lights or anything . Now i was think okey i will flash back old bios but have same thing . Do you know what can be wrong ? Maybe im doing something wrong ? Or i saved backup and it was not full ? Thing is that i checked many times bios dump and looks like its ok and file size as well is same as should be . Hope you can help me with that !

[hoaca388]

Re: T470 bios needed

Strange thing i tried to flash that bios what you corrected for me . It didn't work , laptop was spin fan for one sec and thats all . No lights or anything . Now i was think okey i will flash back old bios but have same thing . Do you know what can be wrong ? Maybe im doing something wrong ? Or i saved backup and it was not full ? Thing is that i checked many times bios dump and looks like its ok and file size as well is same as should be . Hope you can help me with that !

Post your serial number, T470S have no type 20HD.

[valerix9898]

Re: T470 bios needed

Sorry that was my mistake . Its t470 20hd . I have 3 of them with bit different models when was doing backup just write t470s by mistake

[hoaca388]

Re: T470 bios needed

Sorry that was my mistake . Its t470 20hd . I have 3 of them with bit different models when was doing backup just write t470s by mistake

Flash this file to see if your device will work again or have additional damage.

[Markus1741]

Re: T470 bios needed

Strange thing i tried to flash that bios what you corrected for me . It didn't work , laptop was spin fan for one sec and thats all . No lights or anything . Now i was think okey i will flash back old bios but have same thing . Do you know what can be wrong ? Maybe im doing something wrong ? Or i saved backup and it was not full ? Thing is that i checked many times bios dump and looks like its ok and file size as well is same as should be . Hope you can help me with that !

Hello, I don't think the BIOS is the problem, just like every newer Lenovo, the capacitors and resistors are very close to the chip.

We don't know how the BIOS was read out with a clip or by de soldering the chip.

The experienced users in this forum will de solder all the chips in order not to damage anything.

With the clip, resistors are all too likely to be damaged and then nothing works anymore.

See also the two sample images.

[valerix9898]

Re: T470 bios needed

It was soldered out to program. I will have a look if there is any moved components. Thanks for advice

[valerix9898]

Re: T470 bios needed

Flash this file to see if your device will work again or have additional damage.

I will be back home after work and will try to flash . And thanks for your help .

[valerix9898]

Re: T470 bios needed

So thank you guys for help . Really happy with that. I checked all morning mb on google with pictures and find there was missing one resistor next to bios . So now laptop works just need try to flash another bios to get rid of password, hope i will get it sorted. Sorry guys i know im new , have skills to solder but im not programming that much and it’s something new for me .

[valerix9898]

Re: T470 bios needed

Hello, I don't think the BIOS is the problem, just like every newer Lenovo, the capacitors and resistors are very close to the chip.

We don't know how the BIOS was read out with a clip or by de soldering the chip.

The experienced users in this forum will de solder all the chips in order not to damage anything.

With the clip, resistors are all too likely to be damaged and then nothing works anymore.

See also the two sample images.

so laptop starts but stucks on lenovo logo

[valerix9898]

Re: T470 bios needed

Flash this file to see if your device will work again or have additional damage.

that bios what you gave me is with password .

[hoaca388]

Re: T470 bios needed

that bios what you gave me is with password .

Of course, reuse the patch file to unlock.
https://www.badcaps.net/forum/showthread.php?t=87588

[Markus1741]

Re: T470 bios needed

that bios what you gave me is with password .

Hello just for understanding in no ThinkPad BIOS is stored a password can always be found in the MEC chip.

[valerix9898]

Re: T470 bios needed

hello. thanks. yea already reeded that in this forum . anyway thanks for info

[ricka2021]

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

[valerix9898]

Re: T470 bios needed

Of course, reuse the patch file to unlock.
https://www.badcaps.net/forum/showthread.php?t=87588

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 .