I believe doing the standard Restart everyone knows is not enough though. The instructions saw were these
Quick-press Volume Up, then Quick-press Volume Down.
Hold the side power button until the screen turns black (approx. 10 seconds).
Immediately hold both the side button and the Volume Down button for 5 seconds.
Release the side button but continue holding the Volume Down button for another 10 seconds.
The screen will remain black.
If the Apple logo appears, the side button was held too long, and the process must be repeated.
I believe doing the standard Restart everyone knows is not enough though. The instructions saw were these
Quick-press Volume Up, then Quick-press Volume Down. Hold the side power button until the screen turns black (approx. 10 seconds). Immediately hold both the side button and the Volume Down button for 5 seconds. Release the side button but continue holding the Volume Down button for another 10 seconds. The screen will remain black. If the Apple logo appears, the side button was held too long, and the process must be repeated.
That’s DFU mode. We are talking about BFU in this thread.