Update to Klipper on Ender 3 Pro with new 4.2.7 board post

Just wanted to post an update to my post about not being able to flash Klipper to a new 4.2.7 board.

Original post is here-

Klipper on Ender 3 Pro with new 4.2.7 board

So after doing some more research I found some posts that said they had problems with the usb port on their board having cracked solder joints so I looked into it and checked for continuity between the solder joints all the way through my cable to the connector that would plug into the Pi and everything was good.

I then plugged my arduino into the Pi and ran the ls /dev/serial/by-id/* and it returned

/dev/serial/by-id/usb-Arduino__www.arduino.cc\_\_0043\_blah blah blah...

So now knowing that my Pi is good and is seeing serial devices I went back to my printer and tried to flash marlin firmware and see if anything would come up on the printer screen when turned on. Screen is still blank when turned on. it does not appear to be taking the flash. Tried another SD card with no luck.

I think I have determined that the 4.2.7 board is dead. When I got it from amazon it kinda looked like someone pealed back the round tape that sealed the box and reused it to close the but kinda didn't if that makes sense. So I am thinking someone bought it and returned it because they had problems with it or returned their old board and took the new one. Either way I setup a return and put in the comments that it was defective and will not take a flash. I have also ordered the SKR Mini E3 with screen instead and will hopefully be on my way.

Thanks to everyone that tried to help and wish me luck...