Currently we are running AP Firmware 126.96.36.199.373 in our Default Zone, where 4 Zones are included and it works quite fine.
When upgrading to a newer Firmware, last tried with 188.8.131.52.698 - three zones are working as usual, but in one zone clients wont reconnect to the wifi networks anymore, except a few. Mainly we use R500 APs. When downgrading to the old AP Firmware, everything is fine again.
Maybe anyone has an idea, or a hint why this is happening?
Could you please explain more about the client behavior? Are the client unable to connect to the wifi or it is connecting but unable to reconnect when it goes to sleep mode? Is this happening for any specific client models?
Is this shown the same way on all the clients? Even on the clients which are working? Can you take a working client and try to place it on the non working client location (so that it can connect to the same AP) and see if you can reproduce the issue?