Recently upgraded the FW on a ZD1200 from 9.9.x.x (sorry, forgetting exactly which) to FW 188.8.131.52 build 218.
After upgrade I lost it completely. Visited the site and was able to f/d and connect a laptop to it and complete a configuration. Gave it the IP associated with my subnet and when I plugged it back into my switch it fails to pull link. Link light comes on 1 second then off 6 seconds. I'm assuming this is an issue with acquiring an address.
Tested known working ports on the switch and known working devices on those same ports and those devices and ports work as expected. It is only after I plug the ZD1200 into the switch that the ZD1200 fails.
Any suggestions or advice would be greatly appreciated.