Root dexp ursus 9pv 3G 4.4.2 topic

hi please help me to root this dexp ursus 9pv 3G tablet under kitkat:confused:

- Details :
Tablet : dexp ursus 9pv 3G
HARDWARE : intel z3735D 4CORE, 2GB RAM, 32 ROM....
firmware : 9PV3G_R01_20141128_V2.0
KERNEL : 3.10.20-00002-g65dd50e-dirty
android OS : 4.4.2

- i have tried some tools :
VROOT ROOT FAILED
IROOT ROOT FAILED
TECLAST TOOLBOX ROOT FAILED
KINGROOT ROOT FAILED
FRAMAROOT ROOT FAILED
TowelRoot ROOT FAILED
.
.
.
please help i cant live without the root:laugh: