Stuck in recovery mode during update of ios 15.1.1
Yesterday, I updated my iphone 12 pro max to ios 15.1.1. During the update, it went to this screen "support.apple.com/iphone/restore". I contacted support and been back and forth with them for 3 hours to resolve this and nothing happened. We always stuck at the error 9 code. They told me to go to the apple store. The apple store tech check my phone and got the same error. He said that it is a hardware problem and the software update was not the cause of this error. He offered me $599 to repair the phone or to get a new one, since I'm 8 days out of warranty and doesn't have an applecare. I asked him why I'm going to pay $599, if my phone is working fine before the update. He said that he cannot do anything about it because this is the first time he heard such an issue. I'd like everyone to be aware of this issue. In case any of you have experienced the same thing, I appreciate if you could reply to this message. Thank you.
iPhone 12 Pro Max, iOS 15