Lenono Legion Y545 Failed Bios Update. Program Chip?

[bboyzell]

Hi Guys

I purchased a Lenovo Legion Y545 (i7 9750 / RTX 2060)
The previous owner he told me it failed a bios update.

I thought cool i could use a simple EEPROM Programmer, nope
I didn't realize that lenovo don't use EEPROM chips, but EC

So from my findings i can use a Vertyanov Programmer, to reprogram my EC chip via the keyboard connection, but im not 100% sure on this

The Mainboard in my legion is NM-C221 Rev2.0

The Lenovo EC is
IT8226E-192
1919-BXA
S16YSA
L003

i have been able to get my hands pretty easily on a the bios.bin, the machine also turns on with quick fan spin that stops and a blinking power button light.

In Summary does the Vertyanov Programmer, Support the IT8226E-192?
as from what iv seen it only mentions earlier versions of this chip.

As i know the programmer needs the machine to power to be able to program, which this laptop meets that requirement

[piernov]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

If it failed after a BIOS update you should try to flash the BIOS first, and if it doesn't solve it then you can try to flash EC.

[bboyzell]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

there is a separate bios chip to the EC?, i thought the bios was intergrated in to the EC

I did tear it down and had a quick look couldnt spot anything resembling it

Cheers

[piernov]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

There's almost always a dedicated SPI ROM for BIOS. (except on the Apple T2 machines where it's stored on the SSD NAND chips)

[bboyzell]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

There's almost always a dedicated SPI ROM for BIOS. (except on the Apple T2 machines where it's stored on the SSD NAND chips)

Bingo, Found the Chip W25Q80EWNIG 1.8v , now the drama of finding a bios dump thats usuable

Im mostly finding dumps like this
https://www.alisaler.com/legion-y545...1-rev2-0-bios/
that are 8mbyte not /8mbit

I did do dump using my CH341A, and have attached it .bin

[bboyzell]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

File Dump, Suspected corrupt

[piernov]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

That's the VBIOS not the main BIOS.

[SMDFlea]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

The bios chip is at UC3 ,check the schematic - https://www.badcaps.net/forum/showthread.php?p=1017588

When you find it post the backup .

.

[bboyzell]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

That's the VBIOS not the main BIOS.

That would make sense..

..now my 341 Programmer is giving me errors writting to it..

The bios chip is at UC3 ,check the schematic - https://www.badcaps.net/forum/showthread.php?p=1017588

When you find it post the backup .

.

I have found the UC3 located just next to the m.2 slot.

once i have written the Vbios and put it back i will then do a dump of the bios
Chip number: 25B127DSIG

[bboyzell]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

from my googling the chip in the UC3 Position, is a Power IC

yet in the Y540 Schematic its mentions to be a W25Q128JVSIQ_SO8 at this position

[bboyzell]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

from my googling the chip in the UC3 Position, is a Power IC

yet in the Y540 Schematic its mentions to be a W25Q128JVSIQ_SO8 at this position

it has left my slightly confused as the model number has 127 in it, not 128 like most chips

[bboyzell]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

from my findings the 25B127DSIG is a SPI Bios Chip but of a lesser known brand
https://au.mouser.com/ProductDetail/...sTEejDYQ%3D%3D

Since my programmer doesn't want to read from it, might try and harvest a W25Q128 off an old dead laptop (have a few to pick from) and program and install

[bboyzell]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

So far iv been having a bit of luck

read and reprogrammed the bios "25B127DSIG"
set CH341A Version 1.18

i have attached the bios dump

Set it as Winbond W25Q128BV.

Now awaiting the 1.8v Adapter to reprogram the Vbios

Atm im still getting a blinking power light and a brief fan spin, then looking every 15 seconds

[bboyzell]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

So i have made a bit more progress now

https://forums.lenovo.com/t5/Gaming-...SB/m-p/5026109

It is possible to do a forced bios recovery via usb if you fail a bios update on your Y545

i have attempted this but still have no system up again going, i suspect playing with the vbios chip first didnt help..

but i am getting my 1.8v programmer in the next few days

i know no ones commenting but im still posting, the reason behind this is a bit of a log for people with the same machine, to get some ideas on what they can do

[bboyzell]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

At this point i have reverified that the bios and vbios chip have been programmed correctly
but at this point still no good.

i have since stopped working on it

[dlhxr]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

At this point i have reverified that the bios and vbios chip have been programmed correctly
but at this point still no good.

i have since stopped working on it

I have a Y540 and bios fails as welll after I downgrade from bhcn41ww. The one you post about usb bios recovery doesn't work for me as well. Do you have any progress on CH341A force flashing?

[Adiktus]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

I have a Lenovo Legion Y545 (clients laptop) same issue but GTX 1660Ti

I already tested 5 version of bios...no change
I manage to dump the W25Q80EWNIG but my 1.8v adapter needs to be replaced.

I try to erase the bios then turn it on and the key fn and back light is not present meaning the bios is still working on a first phase? input output of Fn keys?

any idea guys?

[Adiktus]

Re: Lenono Legion Y545 Failed Bios Update. Program Chip?

I managed to post the issue in the lenovo community the reply is so dodgy wahaha

https://forums.lenovo.com/t5/Lenovo-...page=2#5737349

[igeektech]

legion y545 bios repair help

same issue as OP, turns on ,no image blinking power button led. attached is a dump of OG bios.

S/N - pf1ysaqm
mtm - 81q60002us

[RJ_TECH]

legion y545 bios repair help

same issue as OP, turns on ,no image blinking power button led. attached is a dump of OG bios.

S/N - pf1ysaqm
mtm - 81q60002us

Try