To perform a clean lock removal via FTF flashing, download and install the following tools on a Windows PC:

Install Flashtool on your PC (usually installs to C:\Flashtool ).

This process will wipe all user data from the device internal storage, including photos, contacts, and apps.

Complete Guide to Removing the Screen Lock on Sony Xperia L1 (G3311) Using FTF Firmware

While flashing an FTF file is highly effective, it's a "nuclear option" that erases all data. Here's a quick look at how it compares to other methods for regaining access to your phone.

The lock screen data is cleared because it's stored in system settings (not user data), but your personal files remain intact.

Go to the Flashtool installation folder ( C:\Flashtool\drivers ).

Download and install the latest version of Androxyde FlashTool, which is the standard utility used to flash FTF files.

The first boot can take up to 10 minutes as the system initializes the clean software.

If you have a computer, the official Sony Xperia Companion software is the first tool you should try. This tool offers a "Software Repair" feature. This process downloads the latest official firmware for your G3311 and reinstalls it. While it also wipes all data, it is the official method and often more straightforward for non-technical users, though it may not bypass the screen lock if USB debugging is disabled.

. If a Google account was previously active on the device, you will be required to enter that account's credentials to complete the setup. If those credentials are forgotten, additional FRP bypass methods