[Q] URGENT HElp! stuck at animation after sony logo topic

Hello every one,
i need urgent help...
i tried to change the home apk with the z3 apk on one of the threads in here, my phone is rooted (but just that), i deleted the old home and replaced it with the new one, and gave permission ...when rebooted the phone it stock on the animation after the sony logo ,
i need help urgently please , even if i had to reflash the phone, but pleas give me instruction of how , i don;t have any back up of stock rom, , if i'm to reflash the mobile i would prefer it to be non rooted original stock rom
my phone is Xperia z c6603