On Wed, May 3, 2017 at 4:17 AM, John Lewis <jlewis@johnlewis.ie> wrote:

I think I've answered my own questions by checking out the menuconfig options, it looks to me as though up to and including Skylake is possible, and flashing internally *should* be okay?

Since writing to the ME region is protected by the IFD configuration, the possibility of internal flashing would be dependent on the current configuration of the board's IFD. I suspect most non-ChromeOS hardware will have it unlocked (default config) as their initial flash was likely with an external programmer. ChromeOS hardware will have a locked IFD and require external flashing to clean the ME (unless previously externally flashed with a ROM w/unlocked IFD).