Android 4.3.1
Room port from Samsung for lenovo
Multi Language .
Instal via recovery
TWRP Recovery for A830 and any phone cpu MTK6589
TWRP Recovery Installation:
1) Download TWRP Recovery pus on the phone SD card
2) Download Mobileuncle MTK Tools app and instal it .
3) Start Mobileuncle MTK Tools and choose "Recovery update"
4) Choose TWRP 2.3.6 from SD card
5) It will ask you "Are you shure flash recovery ?" click "OK" ( see screenshot )
6) It will ask you "Reboot to Recovery" click "OK"
Done