1.Download and Install "MTK Engineering Mode" From Playstore
2.Open App "MTK Engineering Mode" and press "mtk settings"
3.Go to "Log and Debugging" tab
4.press "User2root"
5.press "user" once and then "root" you will see message "update to root success"
6.Exit App and go to Settings>About
7.press "Build Number" 7-8 time untill see "you are now developper"
8.Back to Settings and go to Developper Option
9.Enable Developper Option and then tick USB Debugging
10.Now connect V830W to Your PC
11.Change USB Mode to "CD-Rom" and install Driver(or Utility) From CD-Rom Drive
12.Install Kingo Root
*
http://www.kingoapp.com/
13.After Install Kingo Root, Change USB Mode back to Media Device MTP
14.Open Kingo Root
15.In your Mobile Device need to allow usb debugging mode
*Recommend to tick Alway Allow from this address(Or something nor sure.)
**If not appear on your mobile screen, try change USB Mode to USB Storage.
***Download PDANET+ Install in your PC
http://pdanet.co/a/
16.On Kingo Root Windows will show root status and your device name.
17.Just click "Root Again" if show your device already root.
18.Wait until your mobile device restart and.... you are rooted!