My zf 7962 and 7982 AP's won't connect after upgrading the ZD3025 to 9.6 from 220.127.116.11 build 15. They do connect when I downgrade back to 18.104.22.168 build 15. I'm told that 9.6 offers better Apple TV performance and that's why the push to upgrade.
Both models of AP are supported in ZD 9.6 firmware, so the problem could be IP
connectivity or LWAPP discovery problems. Do you see the APs connect and
upgrade firmware, then not come back? If you can find the APs' IP address, use
SSH to access the AP, login with the ZD admin credentials and issue the cmd:
set director ip a.b.c.d [a.b.c.e]
And this will point the AP to the ZoneDirector, to send it's LWAPP discovery pkts.