Please BIOS for YOGA Slim 7 PRO X 14IAH7

[MrBojangles]

Here are the 3 potential chips on the board. I can only read the Winbond chip with my CH341A chip reader

The image of the Winbond chip is only 1 mb in size.

[Maxpower3]

Here are the 3 potential chips on the board. I can only read the Winbond chip with my CH341A chip reader

The image of the Winbond chip is only 1 mb in size.

read 128 and 64
80 is tbt

in first post, it's 32Mo may have variations

[MrBojangles]

read 128 and 64
80 is tbt

in first post, it's 32Mo may have variations

I'n sorry but can you dumb it down for me just a little? I don't quite understand your post.

[Maxpower3]

I'n sorry but can you dumb it down for me just a little? I don't quite understand your post.

read 25RH64 and 25L128

[MrBojangles]

read 25RH64 and 25L128

Okay gotcha.

So after much trying I managed to read one chip and it was 16 mb. The other one I can't read at all. It's in the list of NeoProgrammer though. I don't know if my chip reader is bad or if the clips I'm using are a problem.

i might have to order another reader.

[MrBojangles]

Hi guys. I've got an update

I bought a new CH341A programmer and I could still not read the chips with the clip. So I desoldered the chips and succeeded in backing up both chips!

The size of the chips are 8 Mb and 16 Mb which seems to be correct. I assume this is the main bios and the backup bios.

I've downloaded a BIOS update from Lenovo for my specific laptop and attempted to extract the BIOS.

Can you please help / guide me on how to update the bios on these chips? The laptop won't start and I'm suspecting a corrupt BIOS.


Details of the laptop:

S/N: PF460YY0
Model: Yoga Slim 7 Pro 14IAH7
Motherbord: JS47Q NM-E822

Thanks!

[hardware1]

Hi guys. I've got an update

I bought a new CH341A programmer and I could still not read the chips with the clip. So I desoldered the chips and succeeded in backing up both chips!

The size of the chips are 8 Mb and 16 Mb which seems to be correct. I assume this is the main bios and the backup bios.

I've downloaded a BIOS update from Lenovo for my specific laptop and attempted to extract the BIOS.

Can you please help / guide me on how to update the bios on these chips? The laptop won't start and I'm suspecting a corrupt BIOS.


Details of the laptop:

S/N: PF460YY0
Model: Yoga Slim 7 Pro 14IAH7
Motherbord: JS47Q NM-E822

Thanks!

Here is your New files, It's a virgin BIOS from Lenovo with your DMI and Windows Key.

[MrBojangles]

Here is your New files, It's a virgin BIOS from Lenovo with your DMI and Windows Key.

Thank you so much. You're a king! I made sure to donate a few dollars worth of ETH as thanks.

0x83b790397a7230474897e7957dab1b72c728c69923e037d91c1a61e5457e0536


Unfortunately it didn't fix the laptop. I'll continue troubleshooting.

But I am curious how you were able to transfer the DMI. Any guide on that or a few words if it's a simple process?

Thanks agian!

[hardware1]

Thank you so much. You're a king! I made sure to donate a few dollars worth of ETH as thanks.

0x83b790397a7230474897e7957dab1b72c728c69923e037d91c1a61e5457e0536


Unfortunately it didn't fix the laptop. I'll continue troubleshooting.

But I am curious how you were able to transfer the DMI. Any guide on that or a few words if it's a simple process?

Thanks agian!

You're welcome.

Your DMI is inside the 16MB file, starting from offset (40000h) till (44000h).
Is already encrypted but in your case there is no need to decrypt it, you can just copy it from the old file to the new one.

[MrBojangles]

You're welcome.

Your DMI is inside the 16MB file, starting from offset (40000h) till (44000h).
Is already encrypted but in your case there is no need to decrypt it, you can just copy it from the old file to the new one.

Okay thanks

[SkaterisPL]

Hi! Can you fix that BIOS for me? Thank you

Not turning on.


Yoga Slim 7 ProX 14IAH7, mb: JS475 NM-E301 rev 1.0

MO: PF9XB2711005

MTM: 82TK0020UK

S/N: PF4041H5

[hardware1]

Hi! Can you fix that BIOS for me? Thank you

Not turning on.


Yoga Slim 7 ProX 14IAH7, mb: JS475 NM-E301 rev 1.0

MO: PF9XB2711005

MTM: 82TK0020UK

S/N: PF4041H5

Here is your new BIOS, try it and let me know.
I think this is not the proper topic for your device, I hope Moderators move it to a new one.