The Flashtool log terminal will immediately start flashing code. Do not move or bump the phone during this phase. Step 5: Finalizing the Process
You need the specific stock firmware file for the G3312 model. You can download this directly through XperiFirm (a tool integrated into newer versions of Flashtool) or from a trusted mobile repair database.
Sony Xperia devices utilize factory firmware packages packed into an extension. Sony G3312 Lock Remove Ftf File
The setup dialog box will automatically close, and progress bars will show that the flashing script is running. Keep the USB connection stable. Once the status log reads Flashing finished , unplug the USB data line and power on your phone. The device will load into the default Android first-time setup wizard with the screen lock successfully removed. 🔒 Post-Unlock Warning: Android FRP Verification
The LED light on your phone should turn , indicating it has successfully entered Flashmode. The Flashtool log terminal will immediately start flashing
FTF is Sony’s proprietary firmware file format, used exclusively by Sony Mobile devices. It is a bundled archive (similar to a ZIP or TAR) that contains all the partitions of the device’s stock firmware: system, kernel, userdata, bootloader, modem, and more.
If you prefer an official method, you can use the Xperia Companion tool on a PC to perform a "Software Repair." This will also re-flash the firmware and remove the lock, but it requires an active internet connection and can also result in data loss. You can download this directly through XperiFirm (a
Flashing a (especially with the “WIPE USERDATA” option) overwrites these files with clean ones from stock firmware, effectively resetting all locks. A custom FTF can be created to exclude the userdata partition, keeping user apps/data but still removing lock files via a scripted wipe command.