Complete the setup. When prompted, connect to Wi-Fi and input your previously synced Google account credentials if FRP was active.
Before we begin, it's crucial to clarify exactly which type of "lock" we are referring to. The term can mean several different things in the context of your phone, and FTF flashing may or may not be the right solution for all of them.
In XperiFirm, navigate the left pane to: Xperia Z5 Premium -> E6833 .