Lenovo L560 - bios PWD

[mcplslg123]

Re: Lenovo L560 - bios PWD

Check for resistance to gnd on 3 and 5v coil to begin with. 0V at kbc means probably your 3v rail is shorted somewhere. Can be 'coz of KBC but there can be "N" number of reasons for 3v rail to pulled down.

[mcplslg123]

Re: Lenovo L560 - bios PWD

Do you know where I could by some programmed KBC's for this particular model?

Once again, thanks for your time!

Cheers

I never buyed them online as i have all the tools. So cant say but try searching on ebay.

[magneh]

Re: Lenovo L560 - bios PWD

Hi,

Yes, but the thing here is that the 2 laptops I flashed with the PWD clear dump, they both behave the same way.

No power at all.
In one of them I rolled back to original dump, and still the same.

So its weird as I have the same problem with both. No power after bios programming.

Im sure the 3v line is not shorted, as the diode mode measurements showed in BIOS chip IC pins.

I will do some checks when Im at the office.

[Pferd5]

Re: Lenovo L560 - bios PWD

which programmer do you use?
Do you use a clip or desolder the chip?

I made the observation that sometimes (with clip) some bytes aren't written correctly.
I mainly used SkyPro II ... and from time to time TL866 II (should be better, but can't be used with clip)

Try desolder the bios chip and check whats happen in this state and repgramm the chip with your old bios dump.

[drgn997]

Re: Lenovo L560 - bios PWD

I may be wrong, but customers have reported that some Lenovo ThinkPad models need bottom cover to be installed, otherwise bios chip won't get +3.3V... worth a try.

[magneh]

Re: Lenovo L560 - bios PWD

which programmer do you use?
Do you use a clip or desolder the chip?

I made the observation that sometimes (with clip) some bytes aren't written correctly.
I mainly used SkyPro II ... and from time to time TL866 II (should be better, but can't be used with clip)

Try desolder the bios chip and check whats happen in this state and reprogram the chip with your old bios dump.

Well finally back to these machines.
I have 2 working L650 with bios locked.
The 3.3V are not coming up after I de soldered the bios, re programmed with the dump posted here, and soldered it back.
Since then machine is dead. No reaction at all. I can confirm the 3.3V are not present in pin 8 of the bios.

I use a SP8-a programmer with the 8 pin adapter for the bios.
Used directly on the programmer.

I can confirm there is no damage on the bios pads or surrounding area/components.

I did the same thing to a second L560. Same result. machine dead since then. Very weird...

Ive measured the Bios pins in diode mode of a working and a non working L560.
I can see considerable differences in certain pins.

pin working L560 L560 KO L560 KO without
bios chip
1 .693 .654 .586
2 .560 .544 .542
3 .736 .580 .624
4 0 0 0
5 .727 .610 .631
6 .590 .565 .631
7 .727 .598 .626
8 .357 .363 .360

But even seeing this, this wont justify the 3.3V to not be present AFAIK...

Seeing this, what would you more experienced guys do?
Thanks for any inputs

[magneh]

Re: Lenovo L560 - bios PWD

I may be wrong, but customers have reported that some Lenovo ThinkPad models need bottom cover to be installed, otherwise bios chip won't get +3.3V... worth a try.

wow
And they are completely right...theres a little switch on the board that the cover push on when in place... some reset signal that prevents 3.3V on the board.

So just need to put some tape on it and I have 3.3V on the bios, and both laptops booting up, still with Bios PWD.

I feel like a donkey right now

[magneh]

Re: Lenovo L560 - bios PWD

Has anyone been able to unlock/reprogram one L560 with bios PWD

Ive reprogrammed BIOS, KBC and still have bios locked

When the PC boots up the first time after bios flash I get this error

0183: Bad CRC of Security Settings in EFI Variable.

Could it be the security chip preventing the unlock??

Jeezz what a nightmare

[medinfo]

Thinkpad L560 Bios Password

Thinkpad L560 Bios Password ?!!
Possible to unlock it from eeprom ??

[digitalpc]

Re: Thinkpad L560 Bios Password

SupervisorPassword?

I usually use this method in ThinkPad, try it too.
https://www.youtube.com/watch?v=FW-RLkzjAS8

[foulou0238]

Re: Lenovo L560 - bios PWD

hello
try flash ur motherboard with this dump and report result please

[majkel_27@o2.pl]

Re: Lenovo L560 - bios PWD

Hey, I checked your bios. Unfortunately, fan, high speed and dark screen, I have a clean ec. and factory bios but unfortunately tpm remains MFG mode and error 189 uuid error. at the original bios tpm is normal, so it probably remains to read the original password from the bios file. Any ideas?

[majkel_27@o2.pl]

Re: Lenovo L560 - bios PWD

Here is a clean factory ec. and a clean factory bios. and bios with a password can someone help put it together so that it works properly.

[imranromi]

Re: Lenovo L560 - bios PWD

Here is a clean factory ec. and a clean factory bios. and bios with a password can someone help put it together so that it works properly.

Password not store in bios this Model.Buy patch or if have i/o programm then you can.

[majkel_27@o2.pl]

Re: Lenovo L560 - bios PWD

Uploaded clean Bios, clean EC, replaced TPM. There is no password but there are errors and tpm is in MFG mode. I play bios with password, TPM is normal still error 189, but asks for generating uuid, but this I can not do because bios the default is in the uefi mode, do you know where else the password can be stored?you mean Maintenance Diskette

[imranromi]

Re: Lenovo L560 - bios PWD

Password in MEC.../ITE/ENE/Nuvoton Which chip have this board?

[majkel_27@o2.pl]

Re: Lenovo L560 - bios PWD

novoton npce388
the new clean feed is erased and uploaded

[imranromi]

Re: Lenovo L560 - bios PWD

Yes use Maintenance Diskette if support your model

[majkel_27@o2.pl]

Re: Lenovo L560 - bios PWD

I've tried unfortunately

[imranromi]

Re: Lenovo L560 - bios PWD

Try programm back original Ec check what results lock or unlock?