[flashrom] Thinkpad T420

Nico Huber nico.h at gmx.de
Sat Mar 17 12:06:48 CET 2018

Hello Aadu,

On 16.03.2018 23:15, aadu at airmail.cc wrote:
> I was trying to flash BIOS of Thinkpad T420 for my project when I
> noticed that version 1.0 of flashrom doesn't support it. From coreboot
> wiki I understood that it was supported at some point. Is there a way to
> bypass this or does older version of flashrom support it?

the hardware of the T420 is generally supported. Though, you need an
option to force flashrom on a laptop (look for `force_I_want_a_brick`
in the manual page); it's safe to use on the T420.

But you can't flash the whole chip if you run the vendor BIOS. It write
protects its bootblock (upper 128KiB of the chip, IIRC). So it depends
on the changes you want to make if flashrom can succeed. If you need
full access, you have to do (the first flash at least) with an external


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