ZoneFlex R310 not connecting to ZoneDirector 1200

[Anonymous]

Hi everyone, before getting started i'd like to thank everybody willing to help me with my struggle.

I'm currently setting up 6 ZoneFlex R310 APs on a ZoneDirector 1200 to spread 3 SSIDs for my company using 3 different VLANs.

All switch port configurations for VLANs where done.
Tested and working.

While all 6 APs where correctly working along with the ZD, one has disconnected for no apparent reason and hasn't connected again since then.

What i have tried was:

- Reset to Factory settings
- Set manually ZD's IP address to the AP
- Ping from the AP connectivity tool to the ZD (success)
- Try different FW version for the AP
- Switch the non working AP with a working one to see if the problem is from the AP or the switch (apparently it comes from the AP)
-Connect the AP directly on the switch wich the ZD is connected to.

All and nothing, i've tried a lot of things, everything i could do but i'm stuck with this issue.

By the way i am using ZD FW version 10.2.1.0 build 7512.0.1.0 and AP FW version (on all APs) is R310_110.0.0.0.683.

Thanks for reading and hope that someone has clues to give me, ask me if you need more informations on the network topology.

Best regards.