Hi Eero,
to switch from vendor firmware to coreboot, on an X220, you need either an
external flash programmer or a slight hardware modification (connect a certain
pin to disable flash protections). The latter requires a very fragile software
procedure. Otherwise, you won't be able to write to the flash chip.
> Is it needed or not?
Extracting parts of the backup is only needed if you want to alter the ME
firmware, but not required for coreboot.
Hope that helps,
Nico
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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