: The tool will begin writing the firmware. Do not disconnect until the process is marked as finished. Alternative Official Recovery
: Choose the downloaded 502SO 340 R13C file. In the "Wipe" pane, ensure USERDATA is checked to successfully remove the screen lock. Connect Device : Power off the phone. Download 502SO 340 R13C Remove Lock ftf
Hold the button while connecting it to the PC via USB. The LED should turn green (Flashmode). : The tool will begin writing the firmware