I was having a challenge with Rachel not showing the Wifi on Button After switching it off through the power Button.
I got a helpful tip of inputing a Keyboard and pressing control D.
However, I made a slight discovery today that may need validation even though its currently working with me.
If You Hard-press the on/off button as you are switching Rachel Plus 3.0 off it will give you trouble as you are either resetting it or Hard-booting it.
The Key is to press the power button twice in fast sequence. Sort off double click the power button.
This way when you switch it back on, you don’t get into any failure to boot problems.