To remove the lock on a Sony Xperia L1 (G3311) , you typically need to flash the original firmware (FTF file) using Sony FlashTool . This process will wipe all user data from the device. Required Tools & Files Flashtool-0.9.22.3 or a compatible version for Xperia devices.
To remove FRP using FTF, you need a specific "FRP Erase" FTF or a modified OEM file. sony g3311 lock remove ftf link
What is the Sony G3311?
Place your downloaded .ftf file in the C:/Flashtool/firmwares folder. To remove the lock on a Sony Xperia
The Sony Xperia L1 (G3311) is a device that often presents a challenge when its screen lock is forgotten. While modern methods favor the Xperia Companion for a "Software Repair", the tech community has long used FTF files (Flash Tool Files) to bypass these barriers. The Story of the Forgotten Pattern What is the Sony G3311