I just updated (2) copters and controllers from Open Solo 3.0 to Open Solo 4.0. I followed directions precisely and both installs appeared to go fine...all messages throughout the process were successful, etc. HOWEVER, when complete, controller is stuck on "Waiting for Solo". It also doesn't see the copter when trying to pair. I factory reset the copter successfully. When trying to reset the controller by pressing Power & FLY buttons till update shows on the screen...nothing, the controller just powers up as normal, and goes to "Waiting for Solo" forever. BOTH controllers and copters are doing exact same thing. I figured I'd try to factory reset the controllers, but the Power & FLY button method doesn't work. How do I do a factory reset on the controller running Open Solo 4.0??