ZD 1200 controller. Over 30 AP's connected (r500 and r700). All working great except for 1 R700 that stays in "disconnected" status. This AP was working fine, then the cat 6 cable was cut. We fixed the cable (line checked with device). Now AP remains in disconnected mode. I've tried reset button, powering off/on. It will go into "upgrading firmware" status but then remains disconnected. Pretty sure all hardware is good. Just need help getting this AP reconfigured and back up and running. Thanks for any help.