Flashing an FTF file completely reinstalls the Android operating system. This is useful if: You are stuck on a screen lock you can't bypass.
: This is the industry-standard tool for Sony devices. Ensure you download a version compatible with your OS. sony g3311 lock remove ftf link
Launch (or Flashtool64.exe for 64-bit systems). 3. Select the Firmware Click the Lightning Bolt icon and select Flashmode . Select the Sony Xperia L1 G3311 from the list. Flashing an FTF file completely reinstalls the Android