Zombah chromebook sandbox

snow check/disable write protect status

crosh->shell->sudo -s

flashrom --wp-status
flashrom --wp-disable

snow/daisy revert firmware to factory default from chrome os

crosh->shell->sudo -s

crossystem |fgrep fwid
chromeos-firmwareupdate --factory

found here https://code.google.com/p/chromium/issues/detail?id=221828