android os issue after twrf update on phone

@i have updated my yu yuphoria phone from android 5.0 lolipop to miui 8.0 with twrf custom rom it was working fine after custom rom. but after 2 day a message appear for update of your phone to latest version so i have kept it for an update for downloading.. after that it message appear to rebbbot your phone to complete update i have choose reboot option. but it goes to twrf update and there show custom rom installation and after 3 minute the phone has just shut down and whole dislay become black.. i have waited for 30 min but then i pulled out battery and again put battery in but same thiing happening phone is showing nothing just a black display..

model: yu yuhoria

email:aksy110798@gmail.com