iPhone XR!!! Can't even open DFU mode.
I don't know what to do, I can't even do DFU mode, tried pressing down up and holding power button. I'm in need of Apple support, my warranty is expired. I have backups but can't even restore them because I went to IOS 15. What should I do??? I can't even open support to make a case? If it's not in DFU it restarts over and over stuck on the apple logo.