1. Load Xperia Companion to your computer. This can be done here www.support.sonymobile.com/global-en/tools/xperia-companion/.
2. Install the application to your computer.
3. Then turn off the phone and connect the phone to the PC using the Micro USB cable.
4. Open Xperia Companion and in the main menu, select Software Repair.
5. Confirm the process by selecting the appropriate option.
6. When the next menu appears, go to FastBoot Mode.
7. Hold down the Volume button button Connect the phone to the PC using the Micro USB cable.
8. Press the next button to start the recovery operation of the factory settings.
9. When the operation is completed, disconnect your device.
Hard Reset - advantages and disadvantages Sony Xperia XZ Premium?
In simple words, Hard Reset means hard resetting the phone. As a result, the system automatically returns to the factory settings and the system is completely cleared. Contacts, correspondence, application, files, search queries, passwords - all of this is deleted from the device's memory.
Benefits of Hard Reset:
The ability to completely clear the phone from user information. Removal of viruses that interfere with the normal functioning of the device. You will be able to solve various problems on the device, for example, with bluetooth or other applications.
Disadvantages of Hard Reset:
All data and applications on the device will be deleted. The need to have a fresh backup. In rare cases, it is impossible to remove some viruses from Android, even after a hard reset.
What needs to be done before the Hard Reset operation.
So that after a hard reset the phone is not blocked by the FRP, make sure that you know the login / password to your google account. You need to log out of your google account before resetting. In this case, after performing a factory reset, the phone will not ask for any logins and passwords and you can immediately use your phone. If after a hard reset the phone is locked and you cannot remember the login and password to enter your Google account, then you need to bypass the FRP lock. Owners of modern phone models will need to contact the official service center to bypass the protection of the FRP.
After performing a hard reset, your device will be completely wiped clean. Everything that was in the memory of your device will be deleted.
What can be done to avoid losing important information?
If important information (contacts, sms, photos, videos) remains in the memory of your device, then there are the following options to save it:
Synchronize your data and contacts with Google. Create a backup using Titanium Backup or other programs. Using the service programs for your phone model, you can transfer important data to your PC.