Wait for the process to complete; the device will reboot automatically once finished.
Extract the downloaded firmware and move the file (and any required data zips) into the dload folder. Power off your phone. Wait for the process to complete; the device
Press and hold simultaneously until the "Software Upgrade" screen appears. Wait for the process to complete
Connect to Wi-Fi; the device will search for and download the latest available firmware automatically. Wait for the process to complete; the device
Use this if the phone is stuck in a boot loop and you have Wi-Fi. Connect the phone to a power source.
Power off, then hold to enter the recovery menu.