However, performing a clean install to bypass a screen lock requires the correct utilities and an understanding of security parameters like Factory Reset Protection (FRP). This technical guide covers everything you need to safely source files, configure your flashing tools, and resolve a device lock using the FTF method. 🛠️ Essential Pre-requisites & Tools
Click on the firmware build number in the right-most column, then click .
Even with a perfect setup, errors can occur. Here are solutions to the most frequent problems:
Flashtool will take a few moments to prepare the files. A pop-up window will eventually appear, instructing you to connect your phone. Turn off your Sony Xperia XZ1 completely. Press and hold the button on the phone. While holding the button, plug the USB cable into the PC.
If the lock is a Google Account (FRP), the device may still ask for the previous Google account credentials after flashing, unless a specific, non-user-data-wiping file is used. 1. Requirements: What You Need To remove the lock, you need to prepare the following: Sony Xperia XZ1 (G8341) Computer/Laptop (Windows 10/11 recommended) USB Data Cable (High quality, original preferred) Xperia Companion (For USB Drivers) XperiFirm (To download the FTF file) Newflasher or Sony Mobile Flasher (Flashtool) 2. Step-by-Step Process to Remove Lock Phase A: Download the FTF Firmware
It is worth noting that flashing an FTF file is not the only way to remove a screen lock, though it is often the most thorough. Here are a few alternatives available to Sony G8341 users:
Unplug your phone and turn it on. The initial boot may take up to 5–10 minutes as it initializes the fresh factory environment. Alternative Security Workarounds
| Method | Effectiveness on G8341 | Requirements | |--------|------------------------|---------------| | | Only works if device has internet & login | Google account, device on | | Sony Companion Repair | Wipes lock but requires boot access | PC, original cable | | Recovery Factory Reset | Partial – may keep lock on Android 9 | Physical keys | | FTF Flashing | 100% guaranteed | PC, drivers, FTF file |
FTF removes the lock only by wiping user data . No "lock remove FTF" exists that keeps your files.
Copy the newflasher.exe into the extracted folder (where files like partition.sin are).
: Ensure your Xperia XZ1 is charged to at least 50% before initiating the flash script.
Ensure your Xperia XZ1 has at least 50% battery charge to prevent the device from powering off mid-process.
Wiping user data that cannot be cleared via the settings menu.
A: Look at the small sticker on the back of the phone, in the SIM card tray, or go to Settings > About Phone > Model Number to confirm it starts with G8341 .
Connect the phone to your computer via USB while still holding the button. A green LED or a message in Flashtool saying "Device connected in flash mode" indicates success.