05-06-2021, 02:34 PM 
		
	
	
		I inadvertently fixed it. The card insertion switch was damaged. Not exactly sure how, but mine is now permanently shorted (thinks a card is always inserted.) I don't know what side effect this will cause, it not knowing when a card is removed. But since I would probably not ever remove a card that is mounted, I can live with that.
https://forum.pine64.org/showthread.php?...8#pid94178
	
	
	
	
https://forum.pine64.org/showthread.php?...8#pid94178

 PinePhone Beta Edition will not boot from MicroSD card
				