Move the x axis all the way to the right.
Then home it.
When it starts moving, press the homing switch with your finger.
Does it stop?
If it doesn't, check wiring.
If it does, the wiring is good. Make sure the switch is being contacted by the carriage.
Hello, How did you fixed it? How did you reset it?
Sorry for necro, I have an Ender 5Pro with a failed firmware update and I am interested how can you sove this (beside buying another board or hooking the board to a PC through a programmer adapter.