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05-24-2016

DE

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Can't update BIOS on T460p after mainboard replacement

2018-10-05, 19:30 PM

I recently had my mainboard replaced by a lenovo technician after my thinkpad T460p switched off and refused to turn on again.
The new mainboard has BIOS version 2.15 installed, which is fairly ancient.
I now wanted to update to the latest BIOS (2.26) via the bootable CD method.

I can successfully boot from a usb stick with the aforementioned image installed and start the bios update.
However, ~5 seconds after the installer says it is now updating the firmware, I get the following error, claiming that I can't update the BIOS because BIOS Guard is enabled:


Now my question is: How can I disable this BIOS guard to be able to update my BIOS? I can't seem to find a setting named something like that in my BIOS.

I have full access to the machine and its BIOS. Secure Boot is disabled, CSM boot is enabled, a harddrive password is set.
Any more information that I can provide to solve this issue?

Thanks and greetings
Martin

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01-02-2010

US

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Re: Can't update BIOS on T460p after mainboard replacement

2018-10-05, 21:46 PM

Look on the security tab in the BIOS.  There should be an entry for Intel SGX and one for Devgice guard.  Try turning those off


Rich


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3 Posts

05-24-2016

DE

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Re: Can't update BIOS on T460p after mainboard replacement

2018-10-05, 22:10 PM

Thanks for that tip!
I had both settings disabled, so simply disabling those doesn't help.
HOWEVER, when I changed SGX Control from "Disabled" to "Software Controlled" (Current State: Disabled), the BIOS update worked!

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This helped me too

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