Method one
  • en
  • write erase
  • reload
Method two
  • Detach all cables
  • Hold power or mode button until a light start flashing
  • Release the button
Method three
  • Attach console
  • Power on device
  • Wait for hash marks (#)
  • Press ESC  
  • flash_init
  • <wait for boot to finish>
  • rename flash:config.txt flash:config.old
  • reset
  • <wait for boot to finish>
  • del flash.config.old