[Elecraft] P3: how to save configuration setting?

[RLVZ at aol.com]

Please advise how to save the "Set Display Brightness" setting.   According 
the Manual you simply select the brightness setting you want by  rotating 
the Select dial, tap the Select knob to exit the function, and Tap Menu  
again to exit the Menu.  But that sequence doesn't save the Brightness  setting 
as every time the P3 powers up the brightness level is back to the  original 
factory default setting.
 
Thanks & 73,
 
Dick- K9OM