Re: Lenovo t495s
fa391/fa491 nm-c181 rev 1.0...
zRedaxz
New Member
Last Activity: 05-13-2021, 09:36 PM
Joined: 07-02-2019
Location: Redmond
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Lenovo t470p - bad crc of security settings in EFI
Hi,
I changed my BIOS with UEFITOOL and I flashed it just fine. After the changed BIOS is flashed I got the following error: "bad crc of security settings in EFI".
Just for curiosity, where is the CRC value stored? Is it in the BIOS or is it in some other chip?
How can I avoid this problem in the future during the BIOS modding?
thx. -
Re: [Lenovo] Where is the BIOS password stored
Thank you! Is this security chip the ThinkEngine chip?...Leave a comment:
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[Lenovo] Where is the BIOS password stored
Hi,
This is a generic question regarding Lenovo t460s/t470/t480. Where is the BIOS password stored?
I found a winbond chip and I was able to read the content just fine. I can open it with UEFITool so this is the UEFI.
I read it from my test machine and I just flashed it to my other test machine with no issue. However the password remained the same.
So where is the BIOS password stored and how can I overwrite it?
thank you! -
Re: UEFI Tool - reconstructed body size is smaller than original
Never mind. Looks like it is resolved now and I figured this out..
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UEFI Tool - reconstructed body size is smaller than original
Hi,
I have a BIOS dump from my Lenovo T470p. I can open it with UEFI Tool just fine. The dump size is 16384KB which is the expected value.
With the UEFI tool I extracted the BIOS region 'as is'. The extracted BIOS region file size is 9216KB.
I donwloaded the original BIOS update from Lenovo, from here: [url]https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-t-series-laptops/thinkpad-t470p/downloads/ds120707[/url]
I extracted this BIOS download from Lenovo and the file size of the FL1 is 9197KB. I tried to replace... -
Re: New Members - please post your introductions here
Hi,
I am a software engineer and want's to learn more about the electronics and item level repair. Looks like this is a wonderful forum. Thank you!
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