[coreboot] Is Goryachy's JTAG hack a chance for free firmware ?

[Enrico Weigelt, metux IT consult]

Hi folks,

i'm curios whether Goryachy's JTAG hack is a chance for
getting rid of all proprietary ME/UEFI firmware.

If i'm correct, the ME firmware (or parts of it) is signed, and
the CPU won't run (or switches off) if signatures don't match.

Can the JTAG channel be used to get around that ?

thx.

--mtx