i8730 dead after unlock

[Mustansar]

i m mhaving strange problem with this phone i unocked it via z3x

it has this firmware I8730XWAMH1_AMNAMF1_Spain_Orange_Android_4.1.2

and it was not supported so i flash this one

I8730XWAMB8_OXXAMB6

and unlocked it. It worked well but after a while started tuning off

i flashed the factory firmware again in the phone but the problem persists

screen goes blank and not turns on again for turning on mobile i have to remove battery and put it back each time means that it works until the screen is active one the screen goes blank it doen,t reponce to any key

i have 2 mobiles with this both are new

[Mustansar]

I8730XWAMH1_AMNAMF1_Spain_Orange_Android_4.1.2
this one is single file firmware
and this one 3 files
I8730XWAMB8_OXXAMB6 code modem and csc

[Mustansar]

now it is working with I8730XWAMB8_OXXAMB6 but battery drains in 6 to 7 hours without using the mobile