How do I stop an update that is in preocess on my galaxy note 5???

[AC Question]

when I turned my phone on, I accidently hit the install now but did not mean too. I want to stop it but I don't know how. I tried turning the phone off but it will not turn off. Please help

 

[belodion]

Let it install to completion. If the battery is low, connect the charger.