Before extracting the .rar file and starting the process, ensure your environment is ready:
Easily lock or unlock your device’s bootloader.
Navigate to C:\Flashtool\drivers and run Flashtool-drivers.exe . Select "Flashmode" and "Fastboot" drivers.
Windows 7, 8, 10, or 11 (64-bit recommended).
You must install the Xperia Drivers found in the drivers folder of the installation directory.
Includes built-in scripts for rooting specific older firmware versions.
Place your downloaded .ftf firmware file into the C:\Users\YourName\.flashTool\firmwares folder. Execute the Flash: Open Flashtool (use Flashtool64.exe for 64-bit systems). Click the Lightning Bolt icon and select Flashmode . Choose your firmware from the list.
Some antivirus programs flag Flashtool as a "false positive" due to its ability to modify system files. If you need help with the next steps, I can provide: The exact driver installation steps for Windows 11