Click the lightning bolt icon (top left). A dialog appears. Choose (the default) and click OK.
Download the specific firmware for your model (e.g., Xperia Z3, Z5, etc.) using a tool like Xperifirm. Sony Flashtool 0.9.18.6
Sony Flashtool is an open-source software developed by Androxyde. It allows users to flash official Sony firmware (FTF files) onto Xperia smartphones and tablets. Unlike the official Sony Emma tool, which is restricted to bootloader-unlocked devices, Flashtool works with both locked and unlocked bootloaders, making it much more versatile for the average user. Why Version 0.9.18.6? Many users specifically seek out version 0.9.18.6 because: Click the lightning bolt icon (top left)
Unplug the USB cable. Press and hold the button for 3–5 seconds. The phone vibrates and boots to Sony logo. First boot takes up to 10 minutes. Set up your device as new. Download the specific firmware for your model (e
Even with careful steps, issues arise. Here are the top five errors with this version:
Keep holding the button until the LED light on your phone turns .
Boot back into Flashtool and re-flash the firmware. Make sure to check the USERDATA and APPS_LOG options in the Wipe menu during setup to clear out conflicting old system data. Conclusion