I have a Monoprice Maker Select Plus 3D printer. I was able to update the LCD without issue to 4.0.5. After I restart the expected configuration\navigation screen displayed on the LCD. It looked very good.
I figured at that point I should update the mainboard firmware. I have tried via Cura 4.5 and Arduino. I made sure baud set to 115200 on USB2 and USB3 ports (each time I try different combination). I have tried 3 different USB cables. USB cable is only 1 meter. I have updated\reinstalled the USB driver from the forums here. I disconnected and reconnected the LCD cable to the mainboard. The LCD cable looks ok.
Each time the flashing says it is successful but after restart I get this warning message. The right arrow to continue does not allow me to continue but touch screen seems to be working fine. The previous mainboard firmware appeared to be working, but I did not save a copy before flashing as I did not intend to revert.
Any suggestions to resolve?