Press Power button,
Volume down button and
middle menu button. 
All data will be lost!
1. From the Home screen,
press the Menu Key and
touch Settings.
2 Touch the Privacy
3 Touch Factory data reset.
4 Touch Reset tablet.
5 Touch Erase everything.

Press urgent call in idle
mode and
input *983*987# it
will go to the factory reset
interface and you can
reset the handset to Default.
Note:This method will delete
all the personal information
in that phone.
ZTE V9 tablet FTM mode
firmware upgrade mode:
Press Volume DOWN key +
POWER.