I have been trying to get libreboot on a x60 tablet for a while now and finally took the plunge and tried.
I tried to follow the instructions, but I kept getting confused on which things I had to do and what I didn't.
Anyway, I was able to use an precompiled rom and flash the first time. That seemed to work and it booted up. Saw the logo and passed off to grub and then booted. Only problem was the keyboard didn't work.
So I went ahead and tried the second flash and it aborted. It did say