Device inf:-
Android:-7.1.2
Mt:-6580
Kernel:-3.18.19
Rom Features:-
Smooth And Stable
Dual Sim Card And Dual Sim 3G
Android 7.1.2 Nougat CM 14.1 Based ROM
Fully Deodex Rom
Awesome Battery Backup
Fully OTG Supported
Rill 100% working
Wifi
Hotspot
Bluetooth
Vpn
FM Radio
Audio
Youtube Video (Any browser fine video showing without Youtube app)
Internet Connection
Offline Charging
Audio Recording
Video Recording (with camu app)
Sensor
Adb Root
Headphone
MTP
And many more...

ViperOS bug:
Front Flash
Back Touch
Youtube ( You can play Youtube video from any browser)
Contact ( Can not import sim card numbers but you can import from .vcf file)

Credit:
port for i10 Ñàhïäñ
- XDA Developers
- CM Team
-Samiul Islam Shawon
 -Manjunath Yashu
 -TribetMen
 -Aditya Kr
 -Zain
 -Estahad Mridul
-AH Raj ( Many bugs fixed )

Download :....
1:-Rom Link(383mb)---> Click Here 

2:-OflineCrg Patch(7mb)---> Click Here 

3:- Gapps Link---> Click Here 

4:- Camu Apk Link (22mb)---> Click Here 

Screenshot:-