Help Samsung Galaxy A3 Won't start

[LVgamer98]

Hello, my phone won't start i think it is hard bricked by odin i was only trying to downgrade my phone because the lollipop update drains my battery life. I want the kitkat version back i have download it from sammobile. the perfect version but after it finished it won't boot up and i can't get in bootloader or recovery. Can anyone say how to fix this or can say of this is under warranty the phone is still no 1 month old