I BUY TABLET ON 29.7.2014



I have tablet chinese model :OMAX X1(R708W)


Problem : i change Vold.fstab From ROOT EXPLOER and i make rest tablet


tablet still booting screen Android not open and There no contorl Volume VOL- And VOL+ just only Power .

Spaces 

RAM 1Gb x 512mb ADATA x2 DDR3L
NandFlash : 4gb avaliable ON NANDFLASH 1.73GB SDCARD internal sotrage 800MB
7''Inch lcd
cpu ROCKCHIP 3028a ARMv7 Cortex A9 1,0GHz dual core
GPU MAIL-400
Support usb dongle 3g external
7"INCH

Please help !
About tablet
Android 4.2.2 JB
Bulid number : rk3028a_s753esdk-eng 4.2.2 JDQ39 eng.izw.20140722.160835 test-keys
kernel version : 3.0.36+
gb@tz #93
Tue jul 22 2014 v.1

NEED ROM THIS 
rk3028a_s753esdk-eng_4.2.2 JDQ39_eng.izw.20140722.160835_test-keys.img