Need help... Please....zu 6802 5.0.2 stock stuck with sony logo

Friends, i need help. my sony 6802, 5.0.2 stock stuck with sony logo.
i have Unlocked bootloader, Rooted and installed ZU DUAL Recovery.
i tried to install custom rom with TWRP.
My terrible mistake i forgot to copy custom rom sd card. but i wiped SYSTEM before.
my phone won't boot now. stuck with sony logo.
please help me friends. how to fix this?
i tried sony companion and sony flash tool. there is no way to flash.
can i flash stock rom with flash tool?
if possible? where to get 6802(india) 5.0.2 stock ftf?
PLEASE HELP ME FRIENDS.
(Sorry for my english)
THANKING YOU.