[Elecraft] [KX2] Cannot turn off switch cw tones

[Stephen Prior]

I was playing with the new features in 2.81 and enabled the tones by
holding down APF (plus Rate and A/B) at start-up.  All works great, the
double tap on PTT gives the freq. etc.  However, having established that it
works, I'm now stuck in the mode.  I can go into Setup and turn SW tones to
off but when I turn the KX2 off and then on again, the SW tones is now set
back to 20!

I have read everything I can find, but I cannot see how to get out of this
so that I have no tones of any description.

Any advice gratefully received!

Thanks and 73, Stephen G4SJP