Haaa, don't get me started on AT&T ]
I was just thinking, if the problem is that the async interface got set to some weird baud rate, maybe it can be reset by sending the command via the SPI interface. I have a couple of these displays, but not sure I've ever tried that, sending a baud rate command via SPI. Maybe that would work, if it were me, I wouldn't have gone out of my way to make the baud rate command only work via async.