Important Windows 10/11 Note: If the driver installation fails, you may need to restart Windows with to allow the unsigned legacy Sony drivers to install properly. Step 3: Setting Up the Flashing Interface
XperiFirm downloads firmware in SIN file format. To obtain a ready‑to‑use .ftf file, open FlashTool and go to Tools → Bundles → Create . Select the downloaded SIN files and click “Create”. FlashTool will bundle them into a single .ftf file.
This is the safest official method recommended by Sony for software repair. sony g3311 lock remove ftf link
: Verify that the file is in C:\Users\YourUserName\.flashTool\firmwares . If you changed FlashTool's default path, ensure the firmwares folder is inside that custom directory.
If your goal is to root your device or install custom ROMs (like LineageOS), you must first unlock the bootloader. Please note: (just like flashing firmware) and may void your warranty. Important Windows 10/11 Note: If the driver installation
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Choose your specific region or a generic global firmware version. Select the downloaded SIN files and click “Create”
Release the volume button. The flashing process will start automatically. Step 5: Complete the Flashing and Setup