http://goponygo.com/blog/android/como-hacer-el-acceso-root-a-un-nexus-one-con-1-click/ 

{{android:nexus_one:universalandroot.apk|}}

http://www.poderpda.com/editorial/como-prender-un-nexus-one-que-tiene-el-boton-de-encendido-roto/

Montar System como read and write
  http://www.androidpolice.com/2011/07/25/tip-how-to-enable-writing-to-read-only-partitions-remount-rw-in-total-commander-for-android/

Arrancar con trackball:
  http://forum.xda-developers.com/showthread.php?t=1893426