- Reset AP to Factory Default
- Manually Upgrade AP
syswrapper.sh upgrade http://ip-of-controller:8080/dl/firmware/BZ2/188.8.131.527/firmware.bin
- Enter CLI
- Set Inform Server
You can also try to add in /etc/hosts
Then try to ping unifi it should resolve to the controller's IP
the set-inform http://unifi:8080/inform should work as well
In case of size issues on UC-CK:
# apt-get update ; apt-get install aufs-tools'
# /sbin/auplink / flush
Too large mongo database on UC-CK?
Check this link