The Apple rep first had me plug my phone into a pc then update my iTunes software then press the volume up button release then press the volume down button release. Then press the power button and hold it down until the phone rebooted to the Apple.
then I went on iTunes it should have a message pop up that says downloading I’m not sure what but it took about 25-30 minutes it looks like it’s just sitting there but if it says downloading your good. Once completed it asked you to pick a date to restore to I went back to before the update. Once it finished I setup my phone up like new but all my info came back and the sound is working weird thing is the software is the update. Good luck