What should I do if my mobile shut down while software updating??

Hi, I am using Xiaomi A2, today I got a system update. I downloaded it then I plugin my phone to charger at 30% then I apply update after few minutes my phone shut down because my charger didn't work now my phone is switched off while applying software update what should I do??

Thanks for help

Welcome to Android Central! That can brick a phone. After you've let the phone charge back up, are you able to start the phone normally?