Please BIOS for YOGA Slim 7 PRO X 14IAH7

**SMDFlea** · 11-06-2023, 07:06 AM

Re: Please BIOS for YOGA Slim 7 PRO X 14IAH7

Originally posted by bushmann

Please, I need working BIOS file for :
Lenovo YOGA Slim 7 PRO X 14IAH7 - NM-E301
thanks so much

Please read the updated rules and post the laptop serial number,bios backup and a description of what the problem is.

https://www.badcaps.net/forum/showthread.php?t=103570

.

**bushmann** · 11-06-2023, 09:04 AM

Re: Please BIOS for YOGA Slim 7 PRO X 14IAH7

Ahh, sorry I forgot.

This is my backup BIOS not working.
S.N. : PF3J53WY
After BIOS update via Windows updates, after restart notebook not started .
I dont find any binary file for this model on the internet.

Thak you so much for any help with solved thi problem.

Attached Files

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XM25RH256C_@SOIC8_read_orig_KO.zip (8.95 MB, 36 views)

**volinakis** · 11-06-2023, 10:33 AM

Re: Please BIOS for YOGA Slim 7 PRO X 14IAH7

Originally posted by bushmann

Ahh, sorry I forgot.

This is my backup BIOS not working.
S.N. : PF3J53WY
After BIOS update via Windows updates, after restart notebook not started .
I dont find any binary file for this model on the internet.

Thak you so much for any help with solved thi problem.

your SN doesn't mach to any lenovo. Assuming is Yoga Slim 7 ProX 14IAH7 use this bios, your DMI is missing from your dump, is possible to use LMU to write back DMI.

Attached Files

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**SMDFlea** · 11-06-2023, 12:20 PM

Re: Please BIOS for YOGA Slim 7 PRO X 14IAH7

Originally posted by volinakis

your SN doesn't mach to any lenovo. Assuming is Yoga Slim 7 ProX 14IAH7 use this bios, your DMI is missing from your dump, is possible to use LMU to write back DMI.

The DMI is there ,its encrypted, search for the word LENV .Lenovo have moved the DMI area to a new offset in the new bios region

,i don`t know why.

backup 11EC000 - 11EDFFF ,there`s 2 LENV ,the length of both being 2000h

new image 11EB000 - 11ECFFF ,there`s 2 LENV ,the length of both being 2000h

.

**volinakis** · 11-06-2023, 02:10 PM

Re: Please BIOS for YOGA Slim 7 PRO X 14IAH7

Originally posted by SMDFlea

The DMI is there ,its encrypted, search for the word LENV .Lenovo have moved the DMI area to a new offset in the new bios region

,i don`t know why.

backup 11EC000 - 11EDFFF ,there`s 2 LENV ,the length of both being 2000h

new image 11EB000 - 11ECFFF ,there`s 2 LENV ,the length of both being 2000h

.

OK, thanks for info, I was searching for LENV in UEFITool and didn't found anything. If bios is working he knows now what he has to do to get DMI thanks to your infos.

**bushmann** · 11-07-2023, 01:54 AM

Re: Please BIOS for YOGA Slim 7 PRO X 14IAH7

Thanks BIOS is working.
After copy old DMI information to new image all is OK.
Nvidia have error code 43, but it`s another stories.

**SMDFlea** · 11-07-2023, 03:12 AM

Re: Please BIOS for YOGA Slim 7 PRO X 14IAH7

Originally posted by volinakis

OK, thanks for info, I was searching for LENV in UEFITool and didn't found anything. If bios is working he knows now what he has to do to get DMI thanks to your infos.

Newer versions of UEFITool don`t seem to search as good as the older ones. Sometimes i can find text with A57 but not A61, guid searches are ok

Originally posted by bushmann

Thanks BIOS is working.
After copy old DMI information to new image all is OK.
Nvidia have error code 43, but it`s another stories.

.

**volinakis** · 11-07-2023, 07:39 AM

Re: Please BIOS for YOGA Slim 7 PRO X 14IAH7

Originally posted by SMDFlea

Newer versions of UEFITool don`t seem to search as good as the older ones. Sometimes i can find text with A57 but not A61, guid searches are ok

.

yep, after you draw my attention I did a search for hex LENV (4C454E56) in UEFITool and ... surprise! it was found in 2 places!

Attached Files

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**Maxpower3** · 05-16-2024, 02:04 AM

Originally posted by SMDFlea

Re: Please BIOS for YOGA Slim 7 PRO X 14IAH7

The DMI is there ,its encrypted, search for the word LENV .

EXAMPLE

decrypt with xor 5F
look at the value that stands out the most

xor 84 in this one

**SMDFlea** · 05-16-2024, 03:00 AM

Originally posted by Maxpower3

EXAMPLE

decrypt with xor 5F
look at the value that stands out the most

xor 84 in this one

HxD can`t XOR ,i`ve been using TinyHexer,it has an XOR script .

HxD with data inspector and Tiny Hexer XOR value

**MrBojangles** · 01-28-2025, 10:51 AM

Hi guys I am trying to flash my Lenovo Yoga Slim Pro 7 14IAH7.

I'm trying to follow the instructions here but I'm not doing too well. I tried searching for LENV and found it in the new BIOS file (from .fd) but I can't find it in the existing BIOS file. It might be corrupted. I'll post both BIOS files here in hopes of somebody being able to help me.

Thanks

Attached Files

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**peste** · 01-28-2025, 11:06 AM

Originally posted by MrBojangles

Hi guys I am trying to flash my Lenovo Yoga Slim Pro 7 14IAH7.

I'm trying to follow the instructions here but I'm not doing too well. I tried searching for LENV and found it in the new BIOS file (from .fd) but I can't find it in the existing BIOS file. It might be corrupted. I'll post both BIOS files here in hopes of somebody being able to help me.

Thanks

post S/N, full name and model, motherboard model, TYPEetc.

What is your problem? Do you want a bios? Or where is the DMI range?

**MrBojangles** · 01-28-2025, 11:19 AM

S/N: 460YY0
Model: Yoga Slim 7 Pro 14IAH7
Motherbord: JS47Q NM-E822

My problem is that I need a new BIOS to program to the bios chip with CH314A programmer.

In the future I would like to learn how to modify the BIOS but for now I just need the file so that I can fix this laptop.

Thanks

**peste** · 01-28-2025, 12:05 PM

Originally posted by MrBojangles

S/N: 460YY0
Model: Yoga Slim 7 Pro 14IAH7
Motherbord: JS47Q NM-E822

My problem is that I need a new BIOS to program to the bios chip with CH314A programmer.

In the future I would like to learn how to modify the BIOS but for now I just need the file so that I can fix this laptop.

Thanks

The s/n is not ok, check it and post again..don't post pictures..

**hardware1** · 01-28-2025, 04:09 PM

Originally posted by MrBojangles

Hi guys I am trying to flash my Lenovo Yoga Slim Pro 7 14IAH7.

I'm trying to follow the instructions here but I'm not doing too well. I tried searching for LENV and found it in the new BIOS file (from .fd) but I can't find it in the existing BIOS file. It might be corrupted. I'll post both BIOS files here in hopes of somebody being able to help me.

Thanks

You take a backup for a wrong chip, this 1MB chip is for Thunderbolt Firmware.
I think your full BIOS should be 24MB, that means you have to find 2 chips and backup them (16MB+8MB).

**hardware1** · 01-28-2025, 04:10 PM

Originally posted by MrBojangles

S/N: 460YY0
Model: Yoga Slim 7 Pro 14IAH7
Motherbord: JS47Q NM-E822

My problem is that I need a new BIOS to program to the bios chip with CH314A programmer.

In the future I would like to learn how to modify the BIOS but for now I just need the file so that I can fix this laptop.

Thanks

This is your Serial Number "PF-460YY0"?

**MrBojangles** · 01-29-2025, 05:35 AM

Originally posted by peste

The s/n is not ok, check it and post again..don't post pictures..

Hi,

Sorry about that. It's really hard to read the metal cover on these.

Serial is: PF460YY0

**MrBojangles** · 01-29-2025, 05:36 AM

Originally posted by hardware1

This is your Serial Number "PF-460YY0"?

Yes exactly!

Ah of course I have the wrong chip...

Okay I guess it's one with main BIOS and one with backup then? I'll check and upload the two images.

**Maxpower3** · 01-29-2025, 05:58 AM

Originally posted by MrBojangles

Yes exactly!

Ah of course I have the wrong chip...

Okay I guess it's one with main BIOS and one with backup then? I'll check and upload the two images.

nothing matches in the sizes

32mo is good size

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Please BIOS for YOGA Slim 7 PRO X 14IAH7

Please BIOS for YOGA Slim 7 PRO X 14IAH7

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