[coreboot] Question about internat flashing over existing coreboot payloads - x220

[diffusae]

Hello!

"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?

Regards,
Reiner

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