Click the button in Flashtool. The software will prepare the files and then prompt you to connect your phone. Turn off your Sony Xperia device completely. Press and hold the Volume Down button.
While holding the button, connect the phone to your computer via USB. Download 02G 317 R12C Remove Lock ftf
Use a high-quality cable to prevent connection drops during flashing. 2. Loading the Firmware in Flashtool Open Flashtool on your computer. Click the Lightning Bolt icon and select Flashmode . Click the button in Flashtool
If you prefer an official tool, you can use the Xperia Companion Software . Select . Press and hold the Volume Down button
Install the "Flashmode" and "Fastboot" drivers usually found in the drivers folder of the Flashtool installation directory.
Flashing an FTF file is a standard way to perform a "Software Repair" when you are locked out of your device.