Remember that I am not responsible if you brick your device.
Just download this file and connect the machine on pc process is fully automated.
Here: http://www.kingoapp.com/index.htm I leave the download
Here it worked 100% on my Xoom MZ608.
Credit Ogunja by topic and root file.
If you copy at least give them credit!
Apologies for the bad english, I'm using Google translator