1.you just try it with own risk
2.to root your i8190 yu just need to flash custom recovery twrp with odin. if sucsess. next log in to twrp (power+home+up) and choose reboot system. and will come pop up to istall superuser n choose it. now your phone reboot automaticaly.. if your device have on.. lookingfor the su app on your app drawer and open it. choose download twrp and download automaticaly su. if finish it your device will reboot automaticaly to twrp. don't press anithing before finish it. if have finish your device will reboot. and coongrate ... your phone have rooted.
3.try to omni rom 4.4.2 by android andi & golden guys custom rom
sorry for my english