Cellular setting giving me a blank screen.
I have followed all the steps from this solution https://discussions.apple.com/thread/251223006?answerId=252357833022#252357833022
and I have repeated the process again and again but I keep getting an error message saying that the "firmware file is corrupted during download".
Any idea how can i update/restore my iPhone? I am getting a blank screen under Cellular setting and I can't make/receive any phone call and messages.
iPhone X