Flashtool 0.9.18.6 -

On the right-hand panel, check the boxes under the section (usually USERDATA and CACHE) if you want to perform a clean, factory factory reset. Leave them unchecked only if you are trying to upgrade without data loss (though this can cause bootloops). Click Flash . Step 4: Connect the Device in Flashmode

: Click the flash icon or "Flash" button in the main interface, then choose "Flashmode" from the dropdown menu. flashtool 0.9.18.6

Restart Windows in "Disable Driver Signature Enforcement" mode and reinstall Flashtool-drivers.exe . Bad USB cable connection or corrupted .ftf file bundle. On the right-hand panel, check the boxes under

This version is considered legacy . For modern Xperia devices, please use Newflasher or Emma by Sony . Step 4: Connect the Device in Flashmode :

The tool will take a minute to prepare the files. A prompt will eventually appear instructing you to connect your phone. Turn off your Sony Xperia device completely. Hold down the button and plug the USB cable into the device. The phone's LED indicator light should turn green, indicating successful Flashmode entry. Step 5: Execute the Flash