Maybe I'm having problems because I'm trying this on an N810, but I tried deleting the initfs and running flash-and-reboot, and I still can't get Diablo to boot - same as if I don't run flash-and-reboot at all. The NOKIA logo appears with the little R&D-mode icon below it, but none of the R&D info (initfs version, etc.) appears, and after 30 seconds the screen just goes dark. I'll try with a stripped Diablo initfs later tonight, I guess.