Connect the phone to your computer via USB while still holding the button. A green LED or a message in Flashtool saying "Device connected in flash mode" indicates success.
Sony Xperia XZ1 (model G8341) can be unlocked by flashing a specific FTF (Flash Tool Firmware) file using the Sony Mobile Flasher sony g8341 lock remove ftf
If your phone had a Google Account signed in, you will likely encounter Factory Reset Protection (FRP) Connect the phone to your computer via USB
Sony XZ1 Unlock FTF File (G8341/G8343) Link: https://ln.run/n0h9c Sony Xperia Flash Tool Link: https://ln.run/p0mUp -------------- YouTube·AH Mobile & Refrigeration sony g8341 lock remove ftf