Lenovo Yoga 15 locked bios

[Scootie]

Hi there,
My clients bios is locked. He bought it this was from a firm who were giving these away very cheap. The bios can be entered while pressing simply enter but nothing can be changed and all boot options are set to exclusive minus the lan card.
The board is a ZIUS1 LA-B591P. Could really use a master password if there is one or some bios dump with schematic. Although I believe I located it but just to be sure.

Thank you.

[Scootie]

Re: Lenovo Yoga 15 locked bios

Small bump for schematic. I managed to get a new bios but it still is locked and cant change anything within. I'm trying to locate where the SVP is on the board.

[Life Goes On]

Re: Lenovo Yoga 15 locked bios

The only way to do that is to replace the bios chip.

[Scootie]

Re: Lenovo Yoga 15 locked bios

The bios chip doesnt contain the key, already tested that. The key is locked away somewhere else, hence the need for a schematic.

[ridamouh159]

Re: Lenovo Yoga 15 locked bios

perhaps the password is in ene/ite/nuvoton
you must to flash it or replace it

[Scootie]

Re: Lenovo Yoga 15 locked bios

Maybe. Still, a schematic would be the best.

[bilen]

Re: Lenovo Yoga 15 locked bios

Maybe. Still, a schematic would be the best.

can you share files for this model

[buglerbalint]

Re: Lenovo Yoga 15 locked bios

How can we remove the BIOS pwd?

Here's the schematic, as an attachement.

[Maxpower3]

Re: Lenovo Yoga 15 locked bios

How can we remove the BIOS pwd?

Here's the schematic, as an attachement.

24s08

maybe same
https://www.badcaps.net/forum/showpo...13&postcount=8

[buglerbalint]

Re: Lenovo Yoga 15 locked bios

24s08

Is this the PIN nr. 1?

[Maxpower3]

Re: Lenovo Yoga 15 locked bios

Is this the PIN nr. 1?

if no chip, it's in the EC then
it depends on the version

rest only Kb9022 ??

look here for Kb9022
https://www.badcaps.net/forum/showpo...4&postcount=19

[buglerbalint]

Re: Lenovo Yoga 15 locked bios

if no chip, it's in the EC then
it depends on the version

rest only Kb9022 ??

look here for Kb9022
https://www.badcaps.net/forum/showpo...4&postcount=19

That's bad news. I found it, it's an ENE KB9022Q chip with 124 pins.

Is it possible to read it with CH341? Maybe through the keyboard connector?
If I have the bin file could the lenovo tool remove the pwd or should I simply post here?

[Maxpower3]

Re: Lenovo Yoga 15 locked bios

That's bad news. I found it, it's an ENE KB9022Q chip with 124 pins.

Is it possible to read it with CH341? Maybe through the keyboard connector?
If I have the bin file could the lenovo tool remove the pwd or should I simply post here?

i use rt809f for that with adapter but it must be simpler, maybe with SVOD or others. unfortunately I don't know

auto patch not working!
just post your file here
or compare if implementation is same and change 0x200 to 022F (look at pics)

[buglerbalint]

Re: Lenovo Yoga 15 locked bios

i use rt809f for that with adapter but it must be simpler, maybe with SVOD or others. unfortunately I don't know

auto patch not working!
just post your file here
or compare if implementation is same and change 0x200 to 022F (look at pics)

Ok, thank you for your help!
I'll get back as soon as I have more time for it!