good news for zte x850 oweners,for those whose mobile is unable to reboot or hang on boot screen when factory reset is done.http://www.google.co.in/url?sa=t&so...AFQjCNEyYgDcyVI8TtsdL5yenQkx7NCTnw&cad=rja.Go to the given link and follow thw instructions.Also for those whose mobile is unbrick or start upto logo and hang on android robot