WARNING!
Before performing a hard reset, make sure you know your Google login and password. If you have Android version 5.1 or higher on your device and you have added a Google account, you might be asked to input the Google account login and password after you perform o software repair.If you cannot provide this information during the setup process, you won't be able to use the device at all after software reset!
You do this at your own risk! Make sure your phone battery is fully charged!
Better remove the SIM card and memory SD card from your phone before this operation!
If you reset or update your phone, all your data may be lost, so it's good to do a full backup before!