Because the system was completely wiped, the first boot will take significantly longer than usual—often between 5 to 10 minutes. When the phone finally boots up, you will be greeted by the initial Android welcome setup wizard. The previous pattern or PIN lock will be entirely removed, and you can configure your device as new.

Windows often blocks unsigned legacy drivers. You must disable Driver Signature Enforcement in Windows 10 or 11 before installing the Flashtool drivers. Navigate to C:\Flashtool\drivers . Launch the Flashtool-drivers.exe file.

Are you getting any specific in the Flashtool log?

: Often integrated into Flashtool, this tool allows you to download the official firmware for the E6833.

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: As with any firmware modification, there is a risk of "bricking" the device if the process is not followed correctly or if the files used are not compatible with the device. This could render the device unusable.

In such predicaments, tech-savvy users and repair shops often turn to more direct methods to regain access to the device. One such method involves using an FTF file with a Flash Tool.

During the component selection, check the boxes for , Fastboot Drivers , and specifically scroll down to select Xperia Z5 Premium device drivers .

Release the Volume Down button once the flashing process begins.

Sony Xperia - Remove Pattern Lock /Xperia with LOCKED Bootloader

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: Download and install the latest version of Androxyde Flashtool . 1. Download the E6833 FTF Firmware

Before starting, gather the necessary digital tools and prepare your workspace to avoid bricking your smartphone.

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