Quote Originally Posted by clough42 View Post
Same jumpers on the board under the drivers?

Change the text in Configuration.h that shows on the LCD just to be absolutely sure you're getting new firmware loaded.
Embarrassment time. The extruder will not turn unless the hot end is at a minimum temperature. I was testing piecemeal, without the hot end preheated. Thank you to everyone that offered their help - sorry for the red herring.