Click Flash . A window will eventually pop up asking you to connect your phone. Enter Flash Mode: Turn off your Sony Xperia SP completely. Hold the Volume Down button. While holding the button, connect the USB cable to your PC.
Copy your downloaded c5303_Lock_remove.ftf file into the firmwares folder of the Flashtool directory. Open Flashtool, click the icon, select Flashmode , and choose your file. 3. Connect in Flash Mode Turn off your Sony Xperia SP completely. Hold the Volume Down button. sony c5303 lock remove ftf
Not any FTF will work. You need an FTF built for the model (single SIM, LTE variant). Using a C5302 or C5306 FTF may result in a soft brick. Click Flash
In the "Wipe" section of Flashtool, ensure USERDATA and CACHE are checked. This is what actually removes the security layer. Hold the Volume Down button
Before diving into the steps, it’s crucial to understand what an FTF file is.