Resetting iPhone X to remove passcode
I want to reset my iPhone X (erasing all data including the passcode, which I have forgotten). I follow the procedure advised by Apple and many others (turn off, connect to Mac, put into recovery mode, then do complete restore). However, on completion, it still (a) displays the pic I had on previously, (b) asks me for a 6-digit passcode, and (c) when I enter any passcode (eg all zeros or 8's) it disables the phone immediately for 15 mins. I've done this 4 times with same result. What to do?
iPhone X