after the flash. You will need to enter the original Google Account credentials to access the phone. FRP bypass guides
The (Xperia XZ1) is a device where removing a screen lock (PIN, pattern, password) via an FTF file is a common misconception. Here's the useful, factual breakdown: sony g8341 lock remove ftf
If you want a safer, official way to reset the phone without hunting for FTF files, use the Sony Xperia Companion Install the software on your PC. Software Repair after the flash