A: Yes. Xperia Companion's "Software repair" function accomplishes a similar result (factory reset) and is easier to use. However, Flashtool offers more control and often works when Companion fails.
Press and hold the while inserting the USB cable. sony c6802 lock remove ftf
While continuing to hold the Volume Down button, plug the micro-USB cable into your PC. A: Yes
: Click the Flash button. The software will prepare the files and then prompt you to connect your device. Connect in Flashmode : Turn off your phone completely. Press and hold the Volume Down button. sony c6802 lock remove ftf
: Open the Flashtool application and click the Lightning Bolt icon. Select Flashmode and click OK. Select the Firmware : Choose the C6802 lock remove file from the list.