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Lenovo IdeaPad B560: how to flash KBC BIOS (reasons - no power, LED indicators don't work)

Lenovo IdeaPad B560: how to flash KBC BIOS (reasons - no power, LED indicators don't work)
Authors: Anton Muchychka
Lenovo IdeaPad B560: how to flash KBC BIOS (reasons - no power, LED indicators don't work)
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Notebook recovery using firmware KBC BIOS (PM25LD010 SOIC-8) and programmer Willem MiniPro TL866A.

After 8 notebooks (Lenovo B560) in 3 weeks, reached their final destination, a.k.a. my gentle hands (with similar symptoms - doesn't boot, battery doesn't charge, no display), I decided to write this tutorial.

Device specifications

Model name: 20068
MB: Wistron LA56 (48.4JW06.011)
KBC: Nuvoton NPCE781EAODX
Flash: MXIC MX25L3206E SOIC-8 + PM25LD010 SOIC-8

Making a diagnosis

The measurements showed that the patient is fully, ultimately and conclusively dead. After reading the literature on this diagnosis, it turned out to be a standard problem of this model. The KBC firmware often crashes. This firmware resides on a microchip PM25LD010!

MXIC MX25L3206E SOIC-8 + PM25LD010 SOIC-8

Necessary tools

In order to flash crashed BIOS you'll need:

1. Hot air gun station to desolder microchip PM25LD010.

Hot air gun station

2. BGA gel flux.

BGA gel flux

3. Programmer to flash microchip firmware using SPI interface (in this specific case, Willem TL866A).

Willem TL866A

Repair

First, you need to desolder the chip from the motherboard. 

Desolder chip from motherboard
Desolder chip from motherboard 2

Then put the chip into the adapter.

Put chip into adapter

Now, put the adapter (and the chip, of course) onto the programmer.

Put adapter onto programmer

Now you have to download the archive with the firmware (I took it from a working device, now the archive contains both BIOS images) B560_MAIN_KBC.zip B560_MAIN_KBC.zip 1.81 MB.

Run the program. To restore the firmware select the desired chip (PM25LD010).

MiniPro v5.91

Select dump KBC BIOS (B560_KBC_ROM.bin) and run flashing process.

Chip Program

After the process is completed solder the chip back.

Solder chip back

And now, verification test run.

Verification test run

Conclusion

The symptoms of this malfunction differ, but one thing is certain - it's a common problem of this notebook, keep this in mind when making a diagnosis or conducting repairs on Lenovo B560. I hope this was helpful ;).

Important notice: do not repair or modify this device if it's still under warranty.



Read also

Discussion (total 21 comments)

krishna
October 24, 2013 at 08:06 am
thank u
can u tell why this kbs bios is used in latest laptop
Administrator User
Administrator User
October 30, 2013 at 01:01 pm
KBC BIOS or EC BIOS - it's so-called "small" BIOS of super I/O which perform an initial initialization and transfer control to UEFI BIOS (main BIOS of system).
kimrocco kimrocco
January 13, 2014 at 08:52 pm
Thank youuuu very best
Niladri Das
January 17, 2014 at 06:38 am
u r simply brilliant..
heydari
February 17, 2014 at 02:06 am
thank you very very much.so good
May 07, 2014 at 05:28 pm
This is a great new discovery for me , thanks a lot I was just wondering how to extract just kbc bios from the complete manufacturer update file ?
Anton Muchychka
Anton Muchychka
May 28, 2014 at 08:26 am
Hello mihailo Shooky!
It's very difficult question to give a simple answer. For different versions of BIOS exist different programs that can unpack it. But, you can do this manually, you can devide a whole file of BIOS into parts, but in this case you need to know addresses of KBC BIOS and main BIOS.
Da Silva
July 12, 2014 at 01:22 pm
Hie
can i flash this bios using a TL866cs????
Anton Muchychka
Anton Muchychka
July 30, 2014 at 08:55 am
Hello Da Silva!
Yes, you can flash this BIOS with TL866cs.
art larry
September 05, 2014 at 04:09 am
A lot of thanks for kbc bios direct link for Lenovo b560.
I cant find if, on your page only.
Sorry for my english/
Best regards )))
Tweety
September 24, 2014 at 12:10 pm
Thanks Very Much for this great discovery.

So do I flash only the KBC or I flash both the main bios and the kbc?

Thanks in advance for your support :)
kokolay kolev
December 27, 2014 at 06:28 am
thank you very much for firmware will now download and try once again thank you and sorry for my bad english
shazad
February 26, 2015 at 04:20 pm
i have Lenovo IdeaPad B560 its total ded no flash no nothing
after i se this post and i flash its PM25LD010 chip and put back on laptop now when i plug charger its power light start blinking on and off if i press power button no do nothing but its processor little bit heating up i download this bios from this website
surendra
March 03, 2015 at 08:45 am
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Alex
March 23, 2015 at 08:14 pm
Hi,
Does changing just the MX25L3206E SOIC-8 chip, solves this problem or does it have to be the PM25LD010 chip?
Thanks!
Anton Muchychka
Anton Muchychka
April 07, 2015 at 09:05 am
Hello Alex!
The PM25LD010 contains KBC BIOS, at the same time the MX25L3206E contains the main BIOS. If your notebook cannot be turned on then I would begin a repairment by flashing KBC BIOS (PM25LD010).
sandesh
May 27, 2015 at 09:01 am
thank a lot dude . u make our life easy
May 29, 2015 at 05:48 am
Thanks. Worked fine on many laptops. It really seems to be a problem of them.
park jung gtyu
August 24, 2015 at 02:45 pm
Thank you very best .
lepden
March 15, 2016 at 01:22 am
My friend's lenovo died suddenly while he was typing something. Now it's stone dead, no power, no LED, nothing. However, while plugging in the AC adapter, the led on the adapter flickers (not blinking). Can this be the KBC bios?
JEYA RUBAN
August 08, 2016 at 02:17 am
Thanksss, Its working well

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