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In the Wipe panel on the right side, check DATA , CACHE , and APPSLOG if you want a clean installation (highly recommended to avoid bootloops). Leave them unchecked only if you are performing a simple upgrade without data loss. 3. Connecting the Device

Easy one-click interface for unlocking and relocking the bootloader. flashtool09110windowsexe extra quality

Often caused by the .ftf file being corrupted. Re-download the firmware. Conclusion In the Wipe panel on the right side,

Ensure the .ftf file is not corrupted and that you have sufficient battery ( flashtool09110windowsexe extra quality

A pop-up animation will appear instructing you to connect your phone. Turn your Xperia device completely . Hold down the Volume Down button. While holding the button, plug the USB cable into the PC.