diffusae via coreboot wrote:
"Once you are running coreboot any subsequent flashes can be done internally, however you will have to force flashrom"
https://www.coreboot.org/Board:lenovo/x220
Is that really possible, without any risk? Doesn't it irritating the embedded controller? Can I ignore the flashrom warnings?
Yes. No (which EC do you mean? why would it be irritated? why is the output of a random program automatically correct?). Yes.
Flashrom contains imprecise blanket statements.
Be careful, and always have a way to recover from a non-working image.
//Peter