I am doing yard work to 2 of my 3 zones right now and have the whole system disabled for several days as many heads are disconnected.  Woke up a 5am to have zone 3 on and spraying water everywhere for 20 minutes. 

How is this possible? Why do you not update your softwar? 

Replacing old Toro system,  all my wires from the zones are too thick to place into the system.  Do you have a wire gauge I can slim down the wires to make it work?