Sony Xperia Z1 - Password Removal, Firmware update with PC Companion

소개

After Android version 4.2 you can't reset password from the service / test menu because the developers closed this door. Now the only way is with changing the firmware.

PC Companion will install the latest firmware on your phone and will reset it to the Factory setting.

You can use this technique also if your device is not boot properly.

!!! This will erase all your personal data!!!

If your device is connected to the internet and you have an installed Google account on it, look at this manual:

How to Use Android Device Manager to Remotely Reset an Android Device

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동영상 개요

1 단계 Sony Xperia Z1 - Password Removal, Firmware update with PC Companion

Sony Xperia Z1 - Password Removal, Firmware update with PC Companion, Sony Xperia Z1 - Password Removal, Firmware update with PC Companion: 1 단계, 이미지 3개 중 1개

Download and install Sony PC Companion.
Sony PC Companion

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2 단계

Insert wisdom here.

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3 단계

Sony Xperia Z1 - Password Removal, Firmware update with PC Companion: 3 단계, 이미지 3개 중 3개

From here you can update your device firmware but it must be unlocked (device can't be in lock screen).
Start the new PC Companion function "Support Zone".
PC Companion will download some necessary files and you are ready to start "Phone / Tablet Software Update".

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4 단계

Sony Xperia Z1 - Password Removal, Firmware update with PC Companion: 4 단계, 이미지 3개 중 3개

Your laptop must be connected to the power adapter.
Select "repair my phone / tablet".
The last warning for your personal data

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5 단계

Sony Xperia Z1 - Password Removal, Firmware update with PC Companion: 5 단계, 이미지 3개 중 3개

After PC Companion prepared your laptop for the update, you must choose the model of your device.
The battery must be at last 80% charged.
Doesn't make a mistake in choosing the model.

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6 단계

Sony Xperia Z1 - Password Removal, Firmware update with PC Companion: 6 단계, 이미지 3개 중 3개

Switch of the phone. If you have a problem with the Android OS and you can't switch it off, then press and hold the power on button for a long time, or use the reset button under the micro SIM cover.
Press and hold the volume down button and then insert the micro USB cable.
Your PC will recognize the phone and PC Companion will download the latest version for your device and will flash it.

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7 단계

Sony Xperia Z1 - Password Removal, Firmware update with PC Companion: 7 단계, 이미지 3개 중 3개

If your PC doesn't recognize you phone (SOMC Flash Device), you must install drivers for it.
S1Boot Fasboot drivers

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8 단계

Sony Xperia Z1 - Password Removal, Firmware update with PC Companion: 8 단계, 이미지 3개 중 3개

When PC Companion finished updating, disconnect the phone and switch it on.
Your device is with latest firmware, in factory state, without personal data and security.
.
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