New XXL Build - won't complete Homing process

[WillAdams (William Adams (Carbide 3D))]

My apologies — sometimes I mis-understand, and trying to cover all the bases.

My inclination here would be to go ahead and try the new Grbl 1.1 update:

GRBL 1.1 and Carbide Motion 4

Here’s a link to the first builds of GRBL 1.1 and CM4. It’s not what we’d call “done” but it works well and we want to get it in the hands of some of our more brave users. DON’T UPGRADE IF YOU ARE USING YOUR MACHINE FOR PRODUCTION OR CANNOT RISK HAVING YOUR MACHINE DOWN WHILE WE WORK THROUGH THIS VERY EARLY RELEASE This update is good for all Carbide 3D machines. Shapeokos must have homing switches though. If you have any problems, please send them to beta@carbide3d.com so we can open a t…

There’s also instruction there on re-flashing to get Grbl 0.9 reinstalled: GRBL 1.1 and Carbide Motion 4 - #21 by WillAdams

but I really wonder if there isn’t something wrong with the board, though I don’t understand that well enough to even guess what it might be.