Android system crash after install update

[AC Question]

Hi all, i'm using zte t617 model. However, after i install an update for the android version, my device getting stuck and cannot get i to startup. If any body can assist me please..

 

[B. Diddy]

Welcome to Android Central! Was this an official system update pushed over-the-air by ZTE, or did you install it manually after downloading it from some website?